00612naa#a2200193#i#450# EN\\bibl\2938 20241230065732.1 1995-042X 20140626b2014####ek#y0engy0150####ca RUS RU Research into transient periodic processes of wastewater cyclotank aerobic treatment with biological sludge Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 12 с. Journal article local Lebedev Vladimir Gubanov Nikolay Tyger Lyubov naukaru.ru