[Bajkiewicz-Grabowska E., 2007, Zrożnicowanie troficzne jezior - stan obecny, miejsce w klasyfikacji troficznej (Trophic diversity of lakes - present state, the place in the trophic classification), [in:] Borowiak D. (ed.), Jeziora Kaszubskiego Parku Krajobrazowego (Lakes of the Kashubian Landscape Park), Ser. Bad.Limnol. 5, Wydaw. KLUG, Gdańsk: 293-305 (in Polish, English summary).]Search in Google Scholar
[Bajkiewicz-Grabowska E., 2008, Lake geoecosystems as an indicator of the rate of natural eutrophication of water reservoirs, Limnol. Rev. 8(1-2): 9-12.]Search in Google Scholar
[Bekteshi A., Cupi A., 2014, Use of trophic state index (Carlson, 1977) for assessment of trophic status of the Shkodra Lake, Journal of Environmental Protection and Ecology 15(1): 359-365. ]Search in Google Scholar
[Carlson R.E., 1977, A trophic state index for lakes, Limnol. Oceanogr. 22: 361-369.10.4319/lo.1977.22.2.0361]Search in Google Scholar
[Carlson R.E., Simpson J. 1996, A coordinator’s guide to volunteer lake monitoring methods, North American Lake Management Society, Madison, pp. 96.]Search in Google Scholar
[Jarosiewicz A., Ficek D., Zapadka T., 2011, Eutrophication parameters and Carlson-type trophic state indices in selected Pomeranian lakes, Limnological Review 11(1): 15-23.10.2478/v10194-011-0023-3]Search in Google Scholar
[Jarosiewicz A., Fryda E., 2011, Zrożnicowanie troficzne wybranych jezior zlewni rzeki Słupi (Trophic diversity of chosen lakes of the Słupia River catchment area), Słupskie Pr. Biol. 8: 51-65 (in Polish, English summary).]Search in Google Scholar
[Kiersztyn B., Siuda W., Chrost R.J., 2002, Microbial ectoenzyme activity: useful parameters for characterizing the trophic conditions of lakes, Pol. J. Environ. Stud. 11: 367-373.]Search in Google Scholar
[Kolada A., Soszka H., Cydzik D., Gołub M., 2005. Abiotic typology of Polish lakes. Limnologica 35: 145-150.10.1016/j.limno.2005.04.001]Search in Google Scholar
[Kostrzewski A., 2008, Present state and functioning of lake geoecosystems - methodological and methodical assumptions, Limnol. Rev. 8(1-2): 5-8.]Search in Google Scholar
[Kubiak J., 2003, Największe dimiktyczne jeziora Pomorza Zachodniego. Poziom trofii, podatność na degradację oraz warunki siedliskowe ichtiofauny (The largest dimictic lake of Western. Pomerania. Trophic status, susceptibility to degradation, and ichthyofauna habitat conditions), Rozpr. AR Szczec. 214, Szczecin, pp. 96 (in Polish, English summary).]Search in Google Scholar
[Lenard T., Ejankowski W., 2012, Frequency of sampling in lake trophy estimation based on TSI indices, Monitoring Środowiska Przyrodniczego 13: 81-84.]Search in Google Scholar
[Matthews R., Hilles M., Pelletier G,. 2002, Determining trophic state in Lake Whatcom, Washington (USA), a soft water lake exhibiting seasonal nitrogen limitation, Hydrobiologia 468(1): 107-121.]Search in Google Scholar
[Napiorkowska-Krzebietke A., Wierzchowska M., Błocka B., Hutorowicz J., Hutorowicz A., Zdanowski B., 2007, Changes in the Trophic State of Lake Niegocin after the Modernization of a Local Wastewater Treatment Plant, Limnological Review 7(3): 153-159.]Search in Google Scholar
[Pełechata A., Pełechaty M., Pukacz A., 2006, An attempt of the trophic status assessment of the lakes of Lubuskie Lakeland, Limnol. Rev. 6: 239-246.]Search in Google Scholar
[Pyka J.P., Zdanowski B., Stawecki K., Prusik S., 2007, Trends in the environmental changes in the selected lakes of the Mazury and Suwałki Lakelands, Limnol. Rev. 7(2): 101-109.]Search in Google Scholar
[Zdanowski B., 1982, Variability of nitrogen and phosphorus content and eutrophication, Pol. Arch. Hydrobiol. 29: 541-597.]Search in Google Scholar