[Bajkiewicz-Grabowska E., 2007, Zróżnicowanie troficzne jezior - stan obecny, miejsce w klasyfikacji troficznej (Trophic diversity of lakes - present state, the place in trophic classification), [in:] Borowiak D. (ed.), Lakes of the Kashubian Landscape Park, KLUG, Gdańsk: 293-305 (in Polish, English summary).]Search in Google Scholar
[Carlson R. E., 1977, A trophic state index for lakes, Limnol. Oceanogr. 22: 361-639.10.4319/lo.1977.22.2.0361]Search in Google Scholar
[Carlson R. E., 1991, Expanding the trophic state concept to identify non-nutrient limited lakes and reservoirs, [in]: Carpenter L. (ed.), Proc. of a national conference on enhancing the states' lake management programs, USEPA, Chicago: 59-71.]Search in Google Scholar
[Carlson R. E., Simpson J., 1996, A coordinator's guide to volunteer lake monitoring methods, North American Lake Management Society, p. 96.]Search in Google Scholar
[Dodds W. K., Jones J. R., Welch E. B., 1998, Suggested classification of stream trophic state: distributions of temperate stream types by chlorophyll, total nitrogen, and phosphorus, Water Res. 32: 1455-1462.10.1016/S0043-1354(97)00370-9]Search in Google Scholar
[Havens K. E., 1995, Secondary nitrogen limitation in a subtropical lake impacted by non-point source agricultural pollution, Environ. Pollut. 89: 241-246.10.1016/0269-7491(94)00076-P]Search in Google Scholar
[Hong H. C., Wong M. H., Mazumder A., Liang Y., 2008. Trophic state, natural organic matter content, and disinfection by-product formation potential of six drinking water reservoirs in the Pearl River Delta, China, J. Hydrol. 359: 164-173.10.1016/j.jhydrol.2008.06.024]Search in Google Scholar
[Jarosiewicz A., Hetmański T., 2009, Sezonowa zmienność stężenia substancji biogenicznych w wodach jeziora Dobra (Pojezierze Pomorskie); poziom trofii jeziora (Seasonal changes in nutrients concentration in lake Dobra (Pomeranian Lake District); trophic state of lake, Słupskie Pr. Biol. 6: 71-80 (in Polish).]Search in Google Scholar
[Jeffrey S. W., Humphrey G. F., 1975, New spectrophotometric equation for determining chlorophyll a, b, c1 and c2, Biochem. Physiol. Pflanz. 167: 194-204.10.1016/S0015-3796(17)30778-3]Search in Google Scholar
[Joniak T., Kuczyńska-Kippen N., 2008, Effect of aquatic macrophytes on water trophy of lowland water bodies in aspect of their surface differentiation, Teka Kom. Ochr. Kszt. Środ. Przyr - OL PAN 5A: 47-52.]Search in Google Scholar
[Kratzer C. R., Brezonik P. L., 1981, A Carlson-type trophic state index for nitrogen in Florida Lakes, Water Res. Bull. 17: 713-715.10.1111/j.1752-1688.1981.tb01282.x]Search in Google Scholar
[Lenard T., Solis M., 2009, Trophic diversity of three deep lakes - Piaseczno, Rogoźno and Krasne - in the years 2006-2007 (Łęczna-Włodawa lake district), Teka Kom. Ochr. Kszt. Środ. Przyr - OL PAN 6: 162-169.]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: 107-121.10.1023/A:1015288519122]Search in Google Scholar
[Marszelewski W., 2001, Jeziora Pojezierza Dobrzyńskiego (Lakes of the Dobrzyńskie Lakeland), UMK, Toruń, p. 139 (in Polish, English summary).]Search in Google Scholar
[Pełechata A., Pełechaty M., Pukacz A., 2006, An attempt to the trop hic 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 environmental changes in the selected lakes of the Mazury and Suwałki Lakelands, Limnol. Rev. 2: 101-109.]Search in Google Scholar
[Rekolainen S., Mitikka S., Vuorenmaa J., Johansson M., 2005, Rapid decline of dissolved nitrogen in Finnish lakes, J. Hydrol. 304: 94-102.10.1016/j.jhydrol.2004.07.024]Search in Google Scholar
[Seip K. L., Jeppesen E., Jensen J. P., Faafeng B., 2000, Is trophic state or regional location the strongest determinant for Chl-a/TP relationships in lakes?, Aquat. Sci. 62: 195-204.10.1007/PL00001331]Search in Google Scholar
[Schindler D. W., 2006, Recent advances in the understanding and management of eutrophication, Limnol. Oceanogr. 51(1, part 2): 356-363.10.4319/lo.2006.51.1_part_2.0356]Search in Google Scholar
[Wetzel R. G., 2001, Limnology. Lake and River Ecosystems, Academic Press, San Diego, California, p. 1006.]Search in Google Scholar
[Zdanowski B., 1999, Eutrofizacja jezior Wigierskiego Parku Narodowego: zagrożenia i ocena (Eutrophication of the lakes of the Wigry National Park: threats and evaluation), [in:] Zdanowski B., Kamiński M., Martyniak A. (eds), Funkcjonowanie i ochrona ekosystemów wodnych na obszarach chronionych (Functioning and the protection of aquatic ecosystems on protected areas), IRS, Olsztyn: 261-278.]Search in Google Scholar