Greens in government: the distributive policies of a culturally progressive force

References

• Abou-Chadi, Tarik (2016). ‘Niche Party Success and Mainstream Party Policy Shifts – How Green and Radical Right Parties Differ in Their Impact’, British Journal of Political Science, 46:2, 417–36.
   Web of Science ®Google Scholar
• Afonso, Alexandre, and Line Rennwald (2018). ‘Social Class and the Changing Welfare State Agenda of Radical Right Parties in Europe’, in Philip Manow, Bruno Palier, and Hanna Schwander (eds.), Welfare Democracies and Party Politics: Explaining Electoral Dynamics in Times of Changing Welfare Capitalism. Oxford: Oxford University Press, 171–94.
   Google Scholar
• Alexiadou, Despina (2016). Ideologues, Partisans, and Loyalists: Ministers and Policymaking in Parliamentary Cabinets. Oxford: Oxford University Press.
   Google Scholar
• Alm, James, and Benno Torgler (2006). ‘Culture Differences and Tax Morale in the United States and in Europe’, Journal of Economic Psychology, 27:2, 224–46.
   Web of Science ®Google Scholar
• Andreoni, James, and Lise Vesterlund (2001). ‘Which is the Fair Sex? Gender Differences in Altruism’, The Quarterly Journal of Economics, 116:1, 293–312.
   Web of Science ®Google Scholar
• Armingeon, Klaus, Virgina Wenger, Fiona Wiedemeier, Christian Isler, Laura Knöpfel, David Weisstanner, and Sarah Engler (2017). Comparative Political Data Set 1960-2015. Berne: Institute of Political Science, University of Berne.
   Google Scholar
• Bäck, Hanna, Wolfgang C. Müller, and Benjamin Nyblade (2017). ‘Multiparty Government and Economic Policy–Making: Coalition Agreements, Prime Ministerial Power and Spending in Western European Cabinets’, Public Choice, 170:1-2, 33–62.
   Web of Science ®Google Scholar
• Ballard-Rosa, Lucy, Martin Cameron, and Kenneth Scheve (2017). ‘The Structure of American Income Tax Policy Preferences’, The Journal of Politics, 79:1, 1–16.
   Web of Science ®Google Scholar
• Barnes, Lucy (2015). ‘The Size and Shape of Government: Preferences over Redistributive Tax Policy’, Socio-Economic Review, 13:1, 55–78.
   Web of Science ®Google Scholar
• Beck, Nathaniel, and Jonathan N. Katz (1995). ‘What to Do (and Not to Do) with Time-Series Cross-Section Data’, American Political Science Review, 89:3, 634–47.
   Web of Science ®Google Scholar
• Bell, Andrew, and Kelvyn Jones (2015). ‘Explaining Fixed Effects: Random Effects Modeling of Time-Series Cross-Sectional and Panel Data’, Political Science Research and Methods, 3:1, 133–53.
   Web of Science ®Google Scholar
• Beramendi, Pablo, Silja, Häusermann, Herbert Kitschelt, and Hanspeter Kriesi (2015).The Politics of Advanced Capitalism. Cambridge: Cambridge University Press.
   Google Scholar
• Bochsler, Daniel, and Pascal Sciarini (2010). ‘So Close but so Far: Voting Propensity and Party Choice for Left-Wing Parties’, Swiss Political Science Review, 16:3, 373–402.
   Web of Science ®Google Scholar
• Bonoli, Giuliano (2013). Origins of Active Social Policy: Labour Market and Childcare Polices in a Comparative Perspective. Oxford: Oxford University Press.
   Google Scholar
• Bonoli, Giuliano, Bea Cantillon, and Wim Van Lacker (2017). ‘Social Investment and the Matthew Effect. Limits to a Strategy’, in Anton Hemerijck (ed.), The Uses of Social Investment. Oxford: Oxford University Press, 66–76.
   Google Scholar
• Bornschier, Simon (2010). Cleavage Politics and the Populist Right: The New Cultural Conflict in Western Europe. Philadelphia: Temple University Press.
   Google Scholar
• Bremer, Björn, and Hanna Schwander (2019). ‘Green Voters and Support for Different Social Policy Logics in Times of Electoral Realignment’, Paper presented at the Conference of Europeanists, June 20–24th, Madrid.
   Google Scholar
• Busemeyer, Marius R., and Julian L. Garritzmann (2017). ‘Public Opinion on Policy and Budgetary Trade-Offs in European Welfare States: Evidence from a New Comparative Survey’, Journal of European Public Policy, 24:6, 871–89.
   Web of Science ®Google Scholar
• Close, Caroline, and Pascal Delwit (2016). ‘Green Parties and Elections’, in Emilie van Haute (ed.), Green Parties in Europe. London: Routledge, 241–264.
   Google Scholar
• Confalonieri, Maria A., and Kenneth Newton (1995). ‘Taxing and Spending: Tax Revolt or Tax Protest?’, in Ole Borre and Elinor Scarbrough (eds.), The Scope of Government. Oxford: Oxford University Press, 121–148.
   Google Scholar
• Dobson, Andrew (2000). Green Political Thought. London: Routledge.
   Google Scholar
• Dolezal, Martin (2010). ‘Exploring the Stabilization of a Political Force: The Social and Attitudinal Basis of Green Parties in the Age of Globalization’, West European Politics, 33:3, 534–52.
   Web of Science ®Google Scholar
• Dolezal, Martin (2016). ‘The Greens in Austria and Switzerland: Two Successful Opposition Parties’, in Emilie van Haute (ed.), Green Parties in Europe. London: Routledge, 15–41.
   Google Scholar
• Döring, Holger, and Philip Manow (2019). Parliaments and Governments Database (ParlGov): Information on Parties, Elections and Cabinets in Modern Democracies. Development version. Retrieved from http://www.parlgov.org
   Google Scholar
• Dumont, Patrick, and Hanna Bäck (2006). ‘Why so Few, and Why so Late? Green Parties and the Question of Governmental Participation’, European Journal of Political Research, 45:s1, S35–S67.
   Web of Science ®Google Scholar
• Esping-Andersen, Gøsta (1990). The Three Worlds of Welfare Capitalism. Princeton: Princeton University Press.
   Google Scholar
• Esping-Andersen, Gøsta (2002). ‘A Child-centred Social Investment Strategy’, in Gøsta Esping-Andersen (ed.), Why We Need a New Welfare State. Oxford: Oxford University Press, 26–67.
   Google Scholar
• Eurostat (2019). Social protection expenditure - tables by functions. Retrieved from http://appsso.eurostat.ec.europa.eu/nui/show.do?dataset=spr_exp_gdp&lang=en.
   Google Scholar
• Evans, Geoffrey, and Nan Dirk De Graaf (2013). Political Choice Matters: Explaining the Strength of Class and Religious Cleavages in Cross-National Perspective. Oxford: Oxford University Press.
   Google Scholar
• Fehr, Ernst, and Klaus M. Schmidt (2006). ‘The Economics of Fairness, Reciprocity and Altruism – Experimental Evidence and New Theories’, in Serge-Christophe Kolm and Jean Mercier Ythier (eds.), Handbook of the Economics of Giving, Altruism and Reciprocity, Volume 1. Amsterdam: Elsevier, 615–94.
   Google Scholar
• Folke, Olle (2014). ‘Shades of Brown and Green: Party Effects in Proportional Election Systems’, Journal of the European Economic Association, 12:5, 1361–95.
   Web of Science ®Google Scholar
• Galbreath, David J., and Daunis Auers (2009). ‘Green, Black and Brown: Uncovering Latvia’s Environmental Politics’, Journal of Baltic Studies, 40:3, 333–48.
   Web of Science ®Google Scholar
• Garritzmann, Julian L., and Hanna Schwander (2017). ‘Compensation, Social Investment, or Whatever Works? Gendered Social Policy Preferences’, Prepared for the CES Conference, Madrid, 2019.
   Google Scholar
• Garritzmann, Julian L., Marius R. Busemeyer, and Erik Neimanns (2018). ‘Public Demand for Social Investment: New Supporting Coalitions for Welfare State Reform in Western Europe?’, Journal of European Public Policy, 25:6, 844–61.
   Web of Science ®Google Scholar
• Garritzmann, Julian L., and Kilian Seng (2016). ‘Party Politics and Education Spending: Challenging Some Common Wisdom’, Journal of European Public Policy, 23:4, 510–30.
   Web of Science ®Google Scholar
• Hainmueller, Jens, and Yiqing Xu (2013). ‘Ebalance: A Stata Package for Entropy Balancing’, Journal of Statistical Software, 54:7, 1–18.
   Web of Science ®Google Scholar
• Hallerberg, Mark, Rolf Rainer Strauch, and Jürgen von Hagen (2009). Fiscal Governance in Europe. Cambridge: Cambridge University Press.
   Google Scholar
• Hamilton, Paul (2002). ‘The Greening of Nationalism: Nationalising Nature in Europe’, Environmental Politics, 11:2, 27–48.
   Web of Science ®Google Scholar
• Häusermann, Silja (2018). ‘The Multidimensional Politics of Social Investment in Conservative Welfare Regimes: Family Policy Reform between Social Transfers and Social Investment’, Journal of European Public Policy, 25:6, 862–77.
   Web of Science ®Google Scholar
• Häusermann, Silja, Thomas Kurer, and Hanna Schwander (2015). ‘High-Skilled Outsiders? Labour Market Vulnerability, Education and Welfare State Preferences’, Socio-Economic Review, 13:2, 235–58.
   Web of Science ®Google Scholar
• Häusermann, Silja, Thomas Kurer, and Hanna Schwander (2016). ‘Sharing the Risk? Households, Labour Market Vulnerability and Social Policy Preferences in Western Europe’, The Journal of Politics, 78:4, 1045–60.
   Web of Science ®Google Scholar
• Hayo, Bernd, and Florian Neumeier (2014). ‘Political Leaders’ Socioeconomic Background and Fiscal Performance in Germany’, European Journal of Political Economy, 34:C, 184–205.
   Web of Science ®Google Scholar
• Hemerijck, Anton (2017). The Uses of Social Investment. Oxford: Oxford University Press.
   Google Scholar
• Hennighausen, Tanja, and Friedrich Heinemann (2015). ‘Don’t Tax Me? Determinants of Individual Attitudes toward Progressive Taxation’, German Economic Review, 16:3, 255–89.
   Web of Science ®Google Scholar
• Hetherington, Marc J. (2005). Why Trust Matters: Declining Political Trust and the Demise of American Liberalism. Princeton: Princeton University Press.
   Google Scholar
• Hooghe, Liesbet, and Gary Marks (2018). ‘Cleavage Theory Meets Europe’s Crises: Lipset, Rokkan, and the Transnational Cleavage’, Journal of European Public Policy, 25:1, 109–35.
   Web of Science ®Google Scholar
• Huber, Evelyn, and John D. Stephens (2001). Development and Crisis of the Welfare State: Parties and Policies in Global Markets. Chicago: University of Chicago Press.
   Google Scholar
• Huber, Evelyn, and John D. Stephens (2006). Combating New Social Risks: The Politics of Post-Industrial Welfare States. London: Routledge.
   Google Scholar
• Inglehart, Ronald (1977). The Silent Revolution: Changing Values and Political Styles among Western Publics. Princeton: Princeton University Press.
   Google Scholar
• Iversen, Torben, and David Soskice (2001). ‘An Asset Theory of Social Policy Preferences’, American Political Science Review, 95:4, 875–93.
   Web of Science ®Google Scholar
• Jaime-Castillo, Antonio M., and Jose L. Saez-Lozano (2010). Redistributive Conflicts and Preferences for Tax Schemes in Europe. Edita: Instituto de Estudios Fiscales.
   Google Scholar
• Jensen, Christian B., and Jae-Jae Spoon (2011). ‘Testing the ‘Party Matters’ Thesis: Explaining Progress towards Kyoto Protocol Targets’, Political Studies, 59:1, 99–115.
   Web of Science ®Google Scholar
• Jenson, Jane (2009). ‘Lost in Translation: The Social Investment Perspective and Gender Equality’, Social Politics: International Studies in Gender, State & Society, 16:4, 446–83.
   Google Scholar
• Kaarbo, Juliet (1996). ‘Power and Influence in Foreign Policy Decision Making: The Role of Junior Coalition Partners in German and Israeli Foreign Policy’, International Studies Quarterly, 40:4, 501–30.
   Web of Science ®Google Scholar
• Kamas, Linda, and Anne Preston (2015). ‘Can Social Preferences Explain Gender Differences in Economic Behavior?’, Journal of Economic Behavior & Organization, 116:C, 525–39.
   Web of Science ®Google Scholar
• Kitschelt, Herbert (1989). The Logics of Party Formation: Ecological Politics in Belgium and West Germany. Ithaca, NY: Cornell University Press.
   Google Scholar
• Kitschelt, Herbert (1994). The Transformation of the European Social Democracy. Cambridge: Cambridge University Press.
   Google Scholar
• Kitschelt, Herbert P. (1988). ‘Left–Libertarian Parties: Explaining Innovation in Competitive Party Systems’, World Politics, 40:2, 194–234.
   Web of Science ®Google Scholar
• Kitschelt, Herbert, and Philipp Rehm (2014). ‘Occupations as a Site of Political Preference Formation’, Comparative Political Studies, 47:12, 1670–706.
   Web of Science ®Google Scholar
• Kleider, Hanna, Leonce Röth, and Julian L. Garritzmann (2018). ‘Ideological Alignment and the Distribution of Public Expenditures’, West European Politics, 41:3, 779–802.
   Web of Science ®Google Scholar
• Klüver, Heike, and Hanna Bäck (2019). ‘Coalition Agreements, Issue Attention, and Cabinet Governance’, Comparative Political Studies, 52:13-14, 1995–2031.
   Web of Science ®Google Scholar
• Knill, Christoph, Marc Debus, and Stephan Heichel (2010). ‘Do Parties Matter in Internationalised Policy Areas? The Impact of Political Parties on Environmental Policy Outputs in 18 OECD Countries, 1970–2000’, European Journal of Political Research, 49:3, 301–36.
   Web of Science ®Google Scholar
• Knutsen, Oddbjørn (2004). Social Structure and Party Choice in Western Europe: A Comparative Longitudinal Study. Basingstoke: Palgrave Macmillan.
   Google Scholar
• Kriesi, Hanspeter (1998). ‘The Transformation of Cleavages Politics: The 1997 Rokkan Stein Lecture’, European Journal of Political Research, 33:2, 165–85.
   Web of Science ®Google Scholar
• Kriesi, Hanspeter, Edgar, Grande, Romain Lachat, Martin Dolezal, Simon Bornschie, and Timotheos Frey (2008). West European Politics in the Age of Globalization. Cambridge: Cambridge University Press.
   Google Scholar
• Laver, Michael, and Kenneth Shepsle (1994). Cabinet Ministers and Parliamentary Government. Cambridge: Cambridge University Press.
   Google Scholar
• Leinaweaver, Justin, and Robert Thomson (2016). ‘Greener Governments: Partisan Ideologies, Executive Institutions, and Environmental Policies’, Environmental Politics, 25:4, 633–60.
   Web of Science ®Google Scholar
• Little, Conor (2016). ‘Green Parties in Government’, in Emilie van Haute (ed.), Green Parties in Europe. London: Routledge, 265–279.
   Google Scholar
• Manow, Philip, Bruno Palier, and Hanna Schwander (2018). Welfare Democracies and Party Politics: Explaining Electoral Dynamics in Times of Changing Welfare Capitalism. Oxford: Oxford University Press.
   Google Scholar
• Meltzer, Allan H., and Scott F. Richard (1981). ‘A Rational Theory of the Size of Government’, Journal of Political Economy, 89:5, 914–28.
   Web of Science ®Google Scholar
• Mettler, Suzanne (2011). The Submerged State: How Invisible Government Policies Undermine American Democracy. Chicago: University of Chicago Press.
   Google Scholar
• Morel, Nathalie, Bruno Palie, and Joakim Palme (2012). Towards a Social Investment Welfare State? Ideas, Policies and Challenges. Bristol: Policy Press.
   Google Scholar
• Moury, Catherine (2013). Coalition Government and Party Mandate: How Coalition Agreements Constrain Ministerial Action. Hoboken: Routledge.
   Google Scholar
• Müller, Wolfgang C., and Kaare Strøm (2008). ‘Coalition Agreements and Cabinet Governance’, in Karen Strøm, Wolfgang C. Müller, and Torbjörn Bergman (eds.), Cabinets and Coalition Bargaining: The Democractic Life Cycle in Western Europe. Oxford: Oxford University Press, 159–200.
   Google Scholar
• Müller-Rommel, Ferdinand (2002). ‘The Lifespan and the Political Performance of Green Parties in Western Europe’, Environmental Politics, 11:1, 1–16.
   Web of Science ®Google Scholar
• Müller-Rommel, Ferdinand, and Thomas Poguntke (2002). Green Parties in National Governments. Basingstoke: Routledge.
   Google Scholar
• Nishida, Makota (2005). Strömungen in den Grünen. Eine Analyse über informell-organisierte Gruppen innerhalb der Grünen (1980–2003). Münster: LIT.
   Google Scholar
• OECD (2019). Social Expenditure: Aggregated data, OECD Social Expenditure Statistics (database). Retrieved from https://www.oecd-ilibrary.org/social-issues-migration-health/data/oecd-social-expenditure-statistics_socx-data-en.
   Google Scholar
• Oesch, Daniel (2006). Redrawing the Class Map: Stratification and Institutions in Britain, Germany, Sweden and Switzerland. Basingstoke: Palgrave Macmillan.
   Google Scholar
• Oesch, Daniel, and Line Rennwald (2010). ‘The Class Basis of Switzerland’s Cleavage between the New Left and the Populist Right’, Swiss Political Science Review, 16:3, 343–71.
   Web of Science ®Google Scholar
• Oppermann, Kai, and Klaus Brummer (2014). ‘Patterns of Junior Partner Influence on the Foreign Policy of Coalition Governments’, The British Journal of Politics and International Relations, 16:4, 555–71.
   Web of Science ®Google Scholar
• Poguntke, Thomas (1989). ‘The "New Politics Dimension" in European Green Parties’, in F. Müller-Rommel (ed.), New Politics in Western Europe: The Rise and Success of Green Parties and Alternative Lists. Boulder: Westview Press, 175–194.
   Google Scholar
• Poguntke, Thomas (1993). Alternative Politics: The German Green Party. Edinburgh: Edinburgh University Press.
   Google Scholar
• Poguntke, Thomas (2002). ‘Green Parties in National Governments: From Protest to Acquiescence?’, Environmental Politics, 11:1, 133–45.
   Web of Science ®Google Scholar
• Price-Thomas, Gareth (2016). ‘Green Party Ideology Today: Divergences and Continuities in Germany, France and Britain’, in Emilie van Haute (ed.), Green Parties in Europe. London: Routledge, 280–297.
   Google Scholar
• Raschke, Joachim (1993). Die Grünen: wie sie wurden, was sie sind. Cologne: Bund-Verlag.
   Google Scholar
• Rehm, Philipp, Jacob S. Hacker, and Mark Schlesinger (2012). ‘Insecure Alliances: Risk, Inequality, and Support for the Welfare State’, American Political Science Review, 106:2, 386–406.
   Web of Science ®Google Scholar
• Richardson, Dick, and Christopher Rootes (1995) The Green Challenge: The Development of Green Parties in Europe. London: Routledge.
   Google Scholar
• Rihoux, Benoît (2016). ‘Green Party Organisations: The Difficult Path from Amateur-Activist to Professional-Electoral Logics’, in Emilie van Haute (ed.), Green Parties in Europe. London: Routledge, 298–314.
   Google Scholar
• Rihoux, Benoit, and Wolfgang Rüdig (2006). ‘Analyzing Greens in Power: Setting the Agenda’, European Journal of Political Research, 45:1, 1–33.
   Google Scholar
• Ronchi, Stefano (2016). The Social Investment Welfare Expenditure Data Set (SIWE): A New Methodology for Measuring the Progress of Social Investment in EU Welfare State Budgets, GK SOCLIFE Working Paper Series, Cologne.
   Google Scholar
• Roosma, Femke, Wim Van Oorschot, and John Gelissen (2016). ‘The Achilles’ Heel of Welfare State Legitimacy: Perceptions of Overuse and Underuse of Social Benefits in Europe’, Journal of European Public Policy, 23:2, 177–96.
   Web of Science ®Google Scholar
• Röth, Leonce (2018). Political Parties and the Market. Towards a Comparable Assessment of Market Liberalism. University of Cologne: Doctoral Dissertation.
   Google Scholar
• Röth, Leonce, Alexandre Afonso, and Dennis C. Spies (2018). ‘The Impact of Populist Radical Right Parties on Socio-Economic Policies’, European Political Science Review, 10:3, 325–50.
   Web of Science ®Google Scholar
• Röth, Leonce (2017). ‘Equivalence Presupposes Validity. Toward Comparable Party Positions on the Market Dimension’, Paper presented at the EPSA Annual Conference 2017, Milan.
   Google Scholar
• Rüdig, Wolfgang (2000). ‘Phasing out Nuclear Energy in Germany’, German Politics, 9:3, 43–80.
   Google Scholar
• Rüdig, Wolfgang (2002). ‘Germany’, Environmental Politics, 11:1, 78–111.
   Web of Science ®Google Scholar
• Rueda, David (2005). ‘Insider-Outsider Politics in Industrialized Democracies: The Challenge to Social Democratic Parties’, American Political Science Review, 99:1, 61–74.
   Web of Science ®Google Scholar
• Schmitt, Carina (2016). ‘Panel Data Analysis and Partisan Variables: How Periodization Does Influence Partisan Effects’, Journal of European Public Policy, 23:10, 1442–59.
   Web of Science ®Google Scholar
• Schulze, Kai (2014). ‘Do Parties Matter for International Environmental Cooperation? An Analysis of Environmental Treaty Participation by Advanced Industrialised Democracies’, Environmental Politics, 23:1, 115–39.
   Web of Science ®Google Scholar
• Schumacher, Gijs, Barbara Vis, and Kees Van Kersbergen (2013). ‘Political Parties’ Welfare Image, Electoral Punishment and Welfare State Retrenchment’, Comparative European Politics, 11:1, 1–21.
   Web of Science ®Google Scholar
• Schwander, Hanna (2018). ‘Labour Market Dualization and Insider–Outsider Divides: Why This New Conflict Matters’, Political Studies Review, 17:1, 14–29.
   Web of Science ®Google Scholar
• Schwander, Hanna (2019). ‘Labour Market Insecurity among the Middle Class: A Cross-Pressured Group’, Political Science Research and Methods, 1–6.
   Web of Science ®Google Scholar
• Schwander, Hanna, and Silja Häusermann (2013). ‘Who’s in and Who’s out? A Risk-Based Conceptualisation of Insiders and Outsiders’, Journal of European Social Policy, 23:3, 248–69.
   Web of Science ®Google Scholar
• Seitz, Werner (2008). ‘"Melonengrüne" und "Gurkengrüne". Die Geschichte der Grünen in der Schweiz’, in Matthias Baer and Werner Seitz (eds.), Die Grünen in der Schweiz. Ihre Politik, ihre Geschichte, ihre Basis. Zurich: Rüegger Verlag, 15–37.
   Google Scholar
• Spoon, Jae-Jae, Sara B. Hobolt, and Catherine E. Vries (2014). ‘Going Green: Explaining Issue Competition on the Environment’, European Journal of Political Research, 53:2, 363–80.
   Web of Science ®Google Scholar
• Stegmueller, D., P. Scheepers, S. Rossteutscher, and E. de Jong (2012). ‘Support for Redistribution in Western Europe: Assessing the Role of Religion’, European Sociological Review, 28:4, 482–97.
   Web of Science ®Google Scholar
• Stix, Helmut (2013). ‘Does the Broad Public Want to Consolidate Public Debt? The Role of Fairness and of Policy Credibility’, Kyklos, 66:1, 102–29.
   Web of Science ®Google Scholar
• Strøm, Kaare, and Wolfgang C. Müller (1999). ‘Political Parties and Hard Choices’, in Wolfgang C. Müller and Kaare Strøm (eds.), Policy, Office, or Votes? How Political Parties in Western Europe Make Hard Decisions. Cambridge: Cambridge University Press, 1–35.
   Google Scholar
• Thewissen, Stefan, and David Rueda (2019). ‘Automation and the Welfare State: Technological Change as a Determinant of Redistribution Preferences’, Comparative Political Studies, 52:2, 171–208.
   Web of Science ®Google Scholar
• van Kersbergen, Kees, and Philip Manow (2009). Religion, Class Coalitions, and Welfare States. Cambridge: Cambridge University Press.
   Google Scholar
• van Oorschot, Wim (2006). ‘Making the Difference in Social Europe: Deservingness Perceptions among Citizens of European Welfare States’, Journal of European Social Policy, 16:1, 23–42.
   Web of Science ®Google Scholar