00628naa#a2200181#i#450# EN\\bibl\4209 20241011030750.5 2308-8877 20141113b2014####ek#y0engy0150####ca RUS RU Investigation of one periodic problem methods of the theory of functional differential equations Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2014 3 с. Journal article local Nikishina I. Volkovich E. naukaru.ru