Citations (100)
Keep up to date with the latest research on this topic with citation updates for this article.
Read on this site (8)
Charikleia Lampraki, Dario Spini & Daniela S. Jopp. (2023) Life Span Development of Self-Continuity in late Adulthood: The Impact of Chronological Age, Loss of Partner and Aversive Childhood Events. Self and Identity 22:4, pages 669-688.
Read now
Read now
Bo Malmberg & Eva K. Andersson. (2023) Exploring Life-Course Trajectories in Local Spatial Contexts Across Sweden. Annals of the American Association of Geographers 113:2, pages 448-468.
Read now
Read now
Sarah Dys, Anna Steeves-Reece & Paula C. Carder. (2023) Lifelong Instability and Perceived Risk of Future Homelessness in Older Adults. Journal of Aging and Environment 37:1, pages 46-64.
Read now
Read now
Ursina Kuhn, Hannah S. Klaas, Erika Antal, Nora Dasoki, Florence Lebert, Oliver Lipps, Gian-Andrea Monsch, Jan-Erik Refle, Valérie-Anne Ryser, Robin Tillmann & Marieke Voorpostel. (2021) Who is most affected by the Corona crisis? An analysis of changes in stress and well-being in Switzerland. European Societies 23:sup1, pages S942-S956.
Read now
Read now
Andreas Ihle, Michel Oris, Julia Sauter, Dario Spini, Ulrike Rimmele, Jürgen Maurer & Matthias Kliegel. (2020) The relation of low cognitive abilities to low well-being in old age is attenuated in individuals with greater cognitive reserve and greater social capital accumulated over the life course. Aging & Mental Health 24:3, pages 387-394.
Read now
Read now
Davide Morselli, Jean-Marie Le Goff & Jacques-Antoine Gauthier. (2019) Self-administered event history calendars: a possibility for surveys?. Contemporary Social Science 14:3-4, pages 423-446.
Read now
Read now
Kenneth F. Ferraro & Markus H. Schafer. (2017) Visions of the Life Course: Risks, Resources, and Vulnerability. Research in Human Development 14:1, pages 88-93.
Read now
Read now
Eric D. Widmer & Dario Spini. (2017) Misleading Norms and Vulnerability in the Life Course: Definition and Illustrations. Research in Human Development 14:1, pages 52-67.
Read now
Read now
Articles from other publishers (92)
Sheng-Li Cheng, Stina Johansson, Shushan Liu & Yun Li. (2023) Western life courses challenged in life stories collected in contemporary China. Frontiers in Public Health 11.
Crossref
Crossref
Heather K. Anderson, Heather Price & Sam Staddon. (2023) Water poverty in a ‘Hydro Nation’: Exploring distributional and recognitional water injustice in Scotland. Utilities Policy 85, pages 101679.
Crossref
Crossref
Tania Zittoun, Alex Gillespie & Marcos José Bernal Marcos. (2023) Development and vulnerability across the lifecourse. Culture & Psychology.
Crossref
Crossref
Yang Li & Dario Spini. (2023) Earlier-life individual and spatial socioeconomic conditions and later-life physical activity. Health & Place 83, pages 103068.
Crossref
Crossref
Francisco Valderrey, Lina Carreño, Simone Lucatello & Emanuele Giorgi. (2023) Multidisciplinary Evaluation of Vulnerabilities: Communities in Northern Mexico. Sustainability 15:17, pages 13077.
Crossref
Crossref
Eva K. Andersson & Ida Borg. (2023) Trajectories of Latent Vulnerability and Distress: Identifying Social and Spatial Fringes of the Swedish Population. Social Indicators Research.
Crossref
Crossref
Alissa Becerril, Elizabeth R. Pfoh, Ardeshir Z. Hashmi, Lyla Mourany, Douglas D. Gunzler, Kristen A. Berg, Nikolas I. Krieger, Kamini Krishnan, Scott Emory Moore, Eva Kahana, Neal V. Dawson, Lorella Luezas Shamakian, James W. Campbell, Adam T. Perzynski & Jarrod E. Dalton. (2023) Racial, ethnic and neighborhood socioeconomic differences in incidence of dementia: A regional retrospective cohort study. Journal of the American Geriatrics Society 71:8, pages 2406-2418.
Crossref
Crossref
Willibald Ruch & Alexander G. Stahlmann. (2020) Toward a dynamic model of Gelotophobia: Social support, workplace bullying and stress are connected with diverging trajectories of life and job satisfaction among Gelotophobes. Current Psychology 42:19, pages 16368-16380.
Crossref
Crossref
Marcos José Bernal Marcos, Tania Zittoun & Alex Gillespie. (2023) Diaries as Technologies for Sense-making and Self-transformation in Times of Vulnerability. Integrative Psychological and Behavioral Science.
Crossref
Crossref
Dimitrios Lampropoulos, Dario Spini, Yang Li & Emmanuelle Anex. (2022)
A dual‐path psychosocial model of social determinants of health in the community: Results from the
Cause Commune
program
. Journal of Community Psychology 51:3, pages 962-977.
Crossref
Crossref
Michele L. Heath & Karen M. Keptner. (2023) Impact of belonging and discrimination on psychological well-being among transitioning adults: study using panel survey for income dynamics transition supplement. Current Psychology.
Crossref
Crossref
Jacques‐Antoine Gauthier & Vida Česnuitytė. (2023) Family in Challenging Circumstances: Ways of Coping. Social Inclusion 11:1, pages 210-213.
Crossref
Crossref
Cédric Jacot, Gaël Curty, Tristan Coste & Fabrice Plomb. (2023) The Temporality of Solidarities. Family and Friend Support’s Variability in Regard to Young People’s Economic Vulnerability Degree in Switzerland. Swiss Journal of Sociology 49:1, pages 233-261.
Crossref
Crossref
Shagini Udayar, Ieva Urbanaviciute, Davide Morselli, Grégoire Bollmann, Jérome Rossier & Dario Spini. (2021) The LIVES Daily Hassles Scale and Its Relation to Life Satisfaction. Assessment 30:2, pages 348-363.
Crossref
Crossref
Carla Pezzia, Magda C. Rogg & Tammy Leonard. (2022) Food security status in seniors over their life course. Applied Economic Perspectives and Policy 45:1, pages 300-316.
Crossref
Crossref
J M Molenaar, L van der Meer, L C M Bertens, E F de Vries, A J M Waelput, M Knight, E A P Steegers, J C Kiefte-de Jong & J N Struijs. (2023) Defining vulnerability subgroups among pregnant women using pre-pregnancy information: a latent class analysis. European Journal of Public Health 33:1, pages 25-34.
Crossref
Crossref
Hannah S. Klaas, Ursina Kuhn, Valérie-Anne Ryser, Jan-Erik Refle, Robin Tillmann & Marieke Voorpostel. (2023) A dynamic perspective on the evolution of perceived stress levels in Switzerland: drivers before and during the COVID-19 pandemic. Longitudinal and Life Course Studies, pages 1-35.
Crossref
Crossref
Camille Joannès, Hélène Colineaux, Gregory Guernec, Raphaële Castagné & Michelle Kelly-Irving. (2023) Toward a conceptual framework of health and its operational definition: an application in the 1958 British birth cohort. BMC Public Health 23:1.
Crossref
Crossref
Janine Jongbloed & Lesley Andres. (2023) Charting well-being over adulthood into pandemic times: a longitudinal perspective. Longitudinal and Life Course Studies, pages 1-24.
Crossref
Crossref
Rafael Tassitano. (2023) More Than Ever, It Is Time to Ensure Regular Opportunities for Physical Activity Among Children and Adolescents: The Potential of Structured Settings. Journal of Physical Activity and Health, pages 1-3.
Crossref
Crossref
Iulia Andreea Vescan, Rose-Lima Van Keer, Emanuele Politi, Antoine Roblain & Karen Phalet. (2023) Dyadic relations between refugees and volunteers: Support exchange and reciprocity experienced in buddy projects in Flanders, Belgium. Current Research in Ecological and Social Psychology 5, pages 100132.
Crossref
Crossref
Laura Bernardi & Danilo Bolano. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
109
120
.
Daniela S. Jopp, Charikleia Lampraki, Davide Morselli, Hans-Jörg Znoj, Jeannette Brodbeck, Dario Spini & Pasqualina Perrig-Chiello. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
91
108
.
Victoria Schüttengruber, Franciska Krings & Alexandra M. Freund. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
31
47
.
Richard A. SetterstenJrJr, Marlis Buchmann, Martin Kohli, René Levy, Anik de Ribaupierre, Katariina Salmela-Aro & Elizabeth Thomson. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
425
438
.
André Berchtold & Paolo Ghisletta. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
413
424
.
Emilie Joly-Burra, Sezen Cekic & Paolo Ghisletta. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
391
411
.
Matthias Studer, Jacques-Antoine Gauthier & Jean-Marie Le Goff. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
375
389
.
Jean-Marie Le Goff, Valérie-Anne Ryser & Laura Bernardi. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
17
29
.
Eric D. Widmer, Marie Baeriswyl & Olga Ganjour. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
303
315
.
Jacques-Antoine Gauthier & Gaëlle Aeby. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
285
302
.
Michel Oris, Marie Baeriswyl, Aline Duvoisin, Rainer Gabriel, Myriam Girardin, Julia Henke, Barbara Masotti, Aude Tholomier & Eric Widmer. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
269
283
.
Jérôme Rossier, Ieva Urbanaviciute, Fabian Gander, Jenny Hofmann, Jonas Masdonati & Willibald Ruch. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
253
267
.
Andreas Ihle, Élvio R. Gouveia, Bruna R. Gouveia, Dan Orsholits & Matthias Kliegel. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
239
252
.
Stéphane Cullati, Stefan Sieber, Bernadette Wilhelmina Antonia van der Linden, Dan Orsholits, Martina von Arx, Matthieu P. Boisgontier & Boris Cheval. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
217
238
.
Dario Spini & Mattia Vacchiano. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
205
213
.
Claudine Burton-Jeangros & Vanessa Fargnoli. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
189
204
.
Adar Hoffman, Anahita Mehrpour & Christian Staerklé. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
169
187
.
Clémentine Rossier, Laura Bernardi, Marie Baersywil, Michel Oris, Marlène Sapin & Eric Widmer. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
153
167
.
Dario Spini & Eric Widmer. 2023. Withstanding Vulnerability throughout Adult Life. Withstanding Vulnerability throughout Adult Life
1
13
.
Matthias Studer & Nicola Cianferoni. 2023. Handbook of Life Course Occupational Health. Handbook of Life Course Occupational Health
59
76
.
Matthias Studer & Nicola Cianferoni. 2023. Handbook of Life Course Occupational Health. Handbook of Life Course Occupational Health
1
18
.
Lindsey van der Meer, Lisa S. Barsties, Leonie A. Daalderop, Adja J. M. Waelput, Eric A. P. Steegers & Loes C. M. Bertens. (2022) Social determinants of vulnerability in the population of reproductive age: a systematic review. BMC Public Health 22:1.
Crossref
Crossref
Ju Sun, Xuying Kong, Haomiao Li, Jiangyun Chen, Qiang Yao, Hanxuan Li, Feng Zhou & Hua Hu. (2022) Does social participation decrease the risk of frailty? Impacts of diversity in frequency and types of social participation on frailty in middle-aged and older populations. BMC Geriatrics 22:1.
Crossref
Crossref
Charikleia Lampraki, Daniela S. Jopp & Dario Spini. (2022) The mediating role of self-continuity on the link between childhood adversity and loneliness in later life. Frontiers in Psychology 13.
Crossref
Crossref
Chijioke Nwachukwu, Helena Chládková, Chinonye Love Moses & Hieu Minh Vu. (2022) Work-to-family conflict, family satisfaction and engagement nexus: insights from millennial managers. Industrial and Commercial Training 54:3, pages 413-428.
Crossref
Crossref
Nicolas Duvoux & Adrien Papuchon. (2022) Class and relative wealth accumulation in five European countries: Sociological Lessons from the Household Financial and Consumption Survey (European Central Bank, 2014 Wave). European Journal of Sociology, pages 1-42.
Crossref
Crossref
André Berchtold. (2022) Relationship between the COVID-19 Pandemic and the Well-Being of Adolescents and Their Parents in Switzerland. International Journal of Environmental Research and Public Health 19:11, pages 6789.
Crossref
Crossref
Javier Castillo, Andrew Webb & Andrés Biehl. (2022) Mapuche Transitions from Education to Work: Vulnerable Transitions and Unequal Outcomes. Journal of Developing Societies 38:2, pages 244-273.
Crossref
Crossref
Eric D. Widmer. (2022) Configurational studies on family exchanges. Journal of Demographic Economics 88:2, pages 157-165.
Crossref
Crossref
Gaëlle Aeby & Jacques-Antoine Gauthier. (2021) Instrumental support exchanges among kin and non-kin in light of personal configurations. Journal of Demographic Economics 88:2, pages 217-236.
Crossref
Crossref
Ann-Zofie Duvander & Linda Kridahl. (2021) Best done differently? Couples’ money pooling and the association with economic conflicts. Journal of Social and Personal Relationships 39:5, pages 1344-1368.
Crossref
Crossref
Lorenzo Righi, Stéphane Cullati, Pierre Chopard & Delphine S. Courvoisier. (2022) General and Vulnerable Population’s Satisfaction With the Healthcare System in Urban and Rural Areas: Findings From the European Social Survey. International Journal of Public Health 67.
Crossref
Crossref
Eric D. Widmer & Dario Spini. 2022. Parcours de vie. Parcours de vie
149
166
.
Nicolas Sommet & Dario Spini. (2022) Financial scarcity undermines health across the globe and the life course. Social Science & Medicine 292, pages 114607.
Crossref
Crossref
Milena Chimienti, Eduardo Guichard, Claudio Bolzman & Jean-Marie Le Goff. (2021) How can we categorise ‘nationality’ and ‘second generation’ in surveys without (re)producing stigmatisation?. Comparative Migration Studies 9:1.
Crossref
Crossref
Louis Chauvel, Eyal Bar Haim, Anne Hartung & Emily Murphy. (2021) Rewealthization in twenty-first century Western countries: the defining trend of the socioeconomic squeeze of the middle class. The Journal of Chinese Sociology 8:1.
Crossref
Crossref
Gaëlle Aeby, Jacques-Antoine Gauthier & Eric D Widmer. (2020) Patterns of support and conflict relationships in personal networks and perceived stress. Current Sociology 69:7, pages 981-1001.
Crossref
Crossref
Rita Gouveia, Vasco Ramos & Karin Wall. (2021) Household Diversity and the Impacts of COVID-19 on Families in Portugal. Frontiers in Sociology 6.
Crossref
Crossref
Sehun Oh, Ian Zapcic, Michael G. Vaughn, Christopher P. Salas-Wright & Yeonwoo Kim. (2021) Housing Instability and Depression among US Mothers Following a Nonmarital Birth. International Journal of Environmental Research and Public Health 18:19, pages 10322.
Crossref
Crossref
Lars Lenze, Claudia Klostermann, Markus Lamprecht & Siegfried Nagel. (2021) Taking Up and Terminating Leisure-Time Physical Activity over the Life Course: The Role of Life Events in the Familial and Occupational Life Domains. International Journal of Environmental Research and Public Health 18:18, pages 9809.
Crossref
Crossref
Emanuela Struffolino & Zachary Van Winkle. (2021) Gender and race differences in pathways out of in-work poverty in the US. Social Science Research 99, pages 102585.
Crossref
Crossref
Anja K. Leist, Eyal Bar-Haim & Louis Chauvel. (2021) Inequality of educational opportunity at time of schooling predicts cognitive functioning in later adulthood. SSM - Population Health 15, pages 100837.
Crossref
Crossref
Cristina M. Pérez. (2021) Male childlessness across the adult life course: A case study addressing a potentially ‘vulnerable’ population. Advances in Life Course Research 49, pages 100414.
Crossref
Crossref
Consuelo Araos & Catalina Siles. (2021) “Juntos pero no revueltos”: Family residential dependence and care vulnerabilities along the life course. Advances in Life Course Research 49, pages 100404.
Crossref
Crossref
Andreas Ihle & Matthias Kliegel. (2021) What do individual reserves tell us about vulnerable ageing?. The Lancet Healthy Longevity 2:4, pages e181-e182.
Crossref
Crossref
Adilson Marques, Duarte Henriques-Neto, Miguel Peralta, João Martins, Fernando Gomes, Stevo Popovic, Bojan Masanovic, Yolanda Demetriou, Annegret Schlund & Andreas Ihle. (2021) Field-Based Health-Related Physical Fitness Tests in Children and Adolescents: A Systematic Review. Frontiers in Pediatrics 9.
Crossref
Crossref
Mattia Vacchiano & Dario Spini. (2021) Networked lives. Journal for the Theory of Social Behaviour 51:1, pages 87-103.
Crossref
Crossref
Gaëlle Aeby & Jacques-Antoine Gauthier. 2021. The Palgrave Handbook of Family Sociology in Europe. The Palgrave Handbook of Family Sociology in Europe
557
574
.
Isabella Crespi, Vida Česnuitytė, Katarzyna Suwada, Anna-Maija Castrén, Claude Martin, Jacques-Antoine Gauthier, Rita Gouveia & Almudena Moreno Mínguez. 2021. The Palgrave Handbook of Family Sociology in Europe. The Palgrave Handbook of Family Sociology in Europe
1
11
.
Michel Oris, Marie Baeriswyl & Andreas Ihle. 2021. Handbook of Active Ageing and Quality of Life. Handbook of Active Ageing and Quality of Life
97
109
.
Andreas Ihle, Élvio R. Gouveia, Bruna R. Gouveia, Maximilian Haas, Sascha Zuber, Dan Orsholits, Boris Cheval, Stefan Sieber, Stéphane Cullati & Matthias Kliegel. (2020) Cognitive Reserve Mitigates Decline in Executive Functioning Following Hepatobiliary Diseases. Swiss Journal of Psychology 79:3-4, pages 149-154.
Crossref
Crossref
Sehun OhDiana M. DiNittoDaniel A. Powers. (2020) Spillover Effects of Job Skills Training on Substance Misuse Among Low-Income Youths With Employment Barriers: A Longitudinal Cohort Study. American Journal of Public Health 110:6, pages 900-906.
Crossref
Crossref
Kathryn Grace, Sunnee Billingsley & David Van Riper. (2020) Building an interdisciplinary framework to advance conceptual and technical aspects of population-environment research focused on women's and children's health. Social Science & Medicine 250, pages 112857.
Crossref
Crossref
Andreas Ihle, Ulrike Rimmele, Michel Oris, Jürgen Maurer & Matthias Kliegel. (2020) The Longitudinal Relationship of Perceived Stress Predicting Subsequent Decline in Executive Functioning in Old Age Is Attenuated in Individuals with Greater Cognitive Reserve. Gerontology 66:1, pages 65-73.
Crossref
Crossref
Jane Gray & Jennifer Dagg. (2019) Crisis, recession and social resilience: A biographical life course analysis. Advances in Life Course Research 42, pages 100293.
Crossref
Crossref
Katariina Salmela-Aro, Lauri Hietajärvi & Kirsti Lonka. (2019) Work Burnout and Engagement Profiles Among Teachers. Frontiers in Psychology 10.
Crossref
Crossref
Laura Bernardi, Johannes Huinink & Richard A. SetterstenJr.Jr.. (2019) The life course cube: A tool for studying lives. Advances in Life Course Research 41, pages 100258.
Crossref
Crossref
Claire Bidart. (2019) How plans change: Anticipation, interferences and unpredictabilities. Advances in Life Course Research 41, pages 100254.
Crossref
Crossref
Annahita Ehsan, Hannah Sophie Klaas, Alexander Bastianen & Dario Spini. (2019) Social capital and health: A systematic review of systematic reviews. SSM - Population Health 8, pages 100425.
Crossref
Crossref
Jacco Duel, Lauren Godier-McBard, Mary Beth MacLean & Matt Fossey. 2019. Military Veteran Reintegration. Military Veteran Reintegration
95
134
.
Andreas Ihle, Paolo Ghisletta, Nicola Ballhausen, Delphine Fagot, Fanny Vallet, Marie Baeriswyl, Julia Sauter, Michel Oris, Jürgen Maurer & Matthias Kliegel. (2018) The role of cognitive reserve accumulated in midlife for the relation between chronic diseases and cognitive decline in old age: A longitudinal follow-up across six years. Neuropsychologia 121, pages 37-46.
Crossref
Crossref
Daniela S. Jopp, Charikleia Lampraki & Claudia Meystre. (2018) Vulnérabilité et résilience chez les centenaires. Gérontologie et société vol. 40 / n° 157:3, pages 111-130.
Crossref
Crossref
Katariina Salmela-Aro & Katja Upadyaya. (2018) Role of demands-resources in work engagement and burnout in different career stages. Journal of Vocational Behavior 108, pages 190-200.
Crossref
Crossref
Stéphane Cullati, Matthias Kliegel & Eric Widmer. (2018) Development of reserves over the life course and onset of vulnerability in later life. Nature Human Behaviour 2:8, pages 551-558.
Crossref
Crossref
Isabel Baumann, Szilvia Altwicker-Hámori, Sibylle Juvalta, Niklas Baer, Ulrich Frick & Peter Rüesch. (2018) Employment Prospects of Young Adults With Mental Disorders. Swiss Journal of Sociology 44:2, pages 259-280.
Crossref
Crossref
André Berchtold, Joan-Carles Surís, Thomas Meyer & Zhivko Taushanov. (2018) Development of Somatic Complaints Among Adolescents and Young Adults in Switzerland. Swiss Journal of Sociology 44:2, pages 239-258.
Crossref
Crossref
Stéphane Cullati, Claudine Burton-Jeangros & Thomas Abel. (2018) Vulnerability in Health Trajectories: Life Course Perspectives. Swiss Journal of Sociology 44:2, pages 203-216.
Crossref
Crossref
Andreas Ihle, Élvio R. Gouveia, Bruna R. Gouveia, Duarte L. Freitas, Jefferson Jurema, Rui T. Ornelas, António M. Antunes, Bárbara R. Muniz & Matthias Kliegel. (2017) The relation of education and cognitive activity to mini-mental state in old age: the role of functional fitness status. European Journal of Ageing 15:2, pages 123-131.
Crossref
Crossref
Davide Morselli & Stefano Passini. (2018) Exclusive and inclusive protest in Europe: Investigating values, support for democracy, and life conditions. Journal of Community & Applied Social Psychology 28:3, pages 123-141.
Crossref
Crossref
Holly Birkett, Fiona Carmichael & Joanne Duberley. (2017) Activity in the third age: Examining the relationship between careers and retirement experiences. Journal of Vocational Behavior 103, pages 52-65.
Crossref
Crossref
Andreas Ihle, Élvio R. Gouveia, Bruna R. Gouveia, Duarte L. Freitas, Jefferson Jurema, Angenay P. Odim & Matthias Kliegel. (2017) The relation of education, occupation, and cognitive activity to cognitive status in old age: the role of physical frailty. International Psychogeriatrics 29:9, pages 1469-1474.
Crossref
Crossref