References
- Claassen, T.H.L., 2000: Water management in a large Dutch, agricultural used catchment area of shallow lakes, The Netherlands. — In: Jha, P.K., Karmacharya, S.B., Baral S.R. & Lacoul, P. (Eds.): Environment and Agriculture — At the crossroad of the new millennium: 421–434. Published by Ecological Society, Kathmandu, Nepal.
- Grontmij Consultancy, 1997: Specific ecological management program of lakes (in Dutch: Specifiek ecologisch beheersprogramma de Leijen (uitwerking van plan Friese boezemmeren). — Report Friesland Water Authority, Leeuwarden, 67 p.
- Joustra, A.H., 1953: Geobotanical investigation of the lake (in Dutch: Plantensociologisch onderzoek van de oots- en westoever van de Leijen. — Report University of Groningen, 64 p.
- Lorenz, C., 2003: Heavily modified waters in Europe. — Case study Loosdrecht Lakes. http://www.kaderrichtlijnwater.nl/import/HMWBTORLoosdrecht.pdf
- Maasdam, R. & Claassen, T.H.L., 1997: The Frisian lakes: Trends in water quality. — Verh. Internat. Verein. Limnol. 26: 736–739.
- Stowa, 1993: Ecological assessment of shallow lakes (in Dutch: Ecologische beoordeling en beheer van oppervlaktewater). — Report 93–16 STOWA, Utrecht, 30 p.
- Van Der Molen, D.T., 2004: References and classification of lakes related to the Water Framework Directive (in Dutch: Referenties en maatlatten voor meren ten behoeve van de Kaderrichtlijn Water). Report 2004–42 STOWA, Utrecht, 450 p.