00632naa#a2200217#i#450# EN\INFRA-M\bibl\254 /en/manage/index 20251223040210.2 1998-071X 20130625b2013####ek#y0engy0150####ca RUS RU Mathematical Forecasting Model of Water Sources’ Ecological Safety Journal article Moscow INFRA-M Academic Publishing LLC. 2013 4 с. Journal article local Smetannikov Yu. Koptev N. Zaytsev V. Lukashev E. test.editorum.ru /en/manage/index