1. K voprosu o nomenklaturę ohimiczeskogo sostava podzemnych vod;Altowski;Vopr. Gidrogeoł. i inż. Geol. sb.,1956
2. Standard Methods for examination of water and waste water;APHA, AWWA, WEF,2012
3. The photosynthetic oxygen-evolving process;Babcock,1987
4. Trophic state classification of lakes with aquatic macrophytes;Canfield;Can. J. Fish. Aquat. Sci.,1983
5. A trophic state index for lakes;Carlson;Limnol. Oceanogr.,1977