References
- Cydzik D., Soszka H., 2003, Changes in water quality of Polish lakes in the years 1991-2000 (based on lake monitoring results), Limnological Review, 3: 53-58
- Cydzik D., Iwaniak M., Jarosiński W., Korol R., Sokołowska E. et al., 2005, Monitoring of surface stagnant waters (lakes), [in:] Quality state of rivers, lakes and the Baltic Sea based on results of research performed within the framework of state monitoring programme in 2003-2004, Warszawa, Biblioteka monitoringu środowiska, Inspekcja Ochrony Środowiska: 112-52, (in Polish with English summary)
- European Commission, 2003, Common implementation strategy for the Water Framework Directive (2000/60/EC), Guidance document No 10, Rivers and Lakes - Typology, reference conditions and classification systems, Produced by Working Group 2.3 - REFCOND, Luxembourg, Office for Official Publications of European Communities, pp. 87
- Hillbricht-Ilkowska A., Kostrzewska-Szlakowska I., Wiśniewski R., 1996, Trophic differentiation of lakes along River Krutynia (Mazurian Lakeland) - present situation. long-term variability and trophic relationships, [in:] The functioning of river-lake system in a lakeland landscape: The Krutynia River (Mazurian Lakeland, Poland). Eds. Hilbricht-Ilkowska A., Wiśniewski R. J., Zeszyty Naukowe Komitetu „Człowiek i Środowisko" PAN, 13: 125-53 (in Polish with English summary)
- Kudelska D., Cydzik D., Soszka H., 1994, Basic lake monitoring: a method manual, Biblioteka monitoringu środowiska, Warszawa, Inspekcja Ochrony Środowiska, pp. 42 (in Polish)
- Kudelska D., Soszka H., Cydzik. D., 1997, Polish practice in lake quality assessment. [in:] Freshwater Quality: Defining the Indefinable?, Eds. Boon P. J., Howell D. L., Edinburgh, Scottish Natural Heritage, pp. 149-54
- Vollenweider R. A., 1989, Global problems of eutrophication and its control, Symp. Biol. Hung., 38: 19-41