1. Canadian Council of Ministers of the Environment. Canadian Water Quality Guidelines for the Protection of Aquatic Life: CCME Water Quality Index 1.0, User’s Manual, in Canadian Environmental Quality Guidelines, 1999, Canadian Council of Ministers of the Environment, Winnipeg. http://ceqg-rcqe.ccme.ca/download/en/138.
2. EN Official Journal of the European Communities 5.12.98 Council Directive 98/83/EU on The Quality of Water Intended for Human Consumption as of 3 November, 1998. https://eur-lex.europa.eu/LexUriServ/ LexUriServ.do?uri=OJ:L:1998:330:0032:0054: EN:PDF.
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4. Khublaryan, M.G. and Moiseenko, T.I., Water Quality, Newletters RAS, 2009, vol. 79, no. 5, pp. 403–410.
5. Methods guidelines on developing schemes of complex utilization and protection of water bodies, approved by the Ministry of Nature Resources RF, Order no. 169 as of July 4, 2007.