00664naa#a2200193#i#450# EN\\bibl\9552 20241127065335.3 2308-8877 20151115b2015####ek#y0engy0150####ca RUS RU Differential mathematical models as a method of studying the dynamics of the number of students Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2015 3 с. Journal article local Kumitskiy B. M. Borisova Nadezhda Cavrasova N. zh-szf.ru