00478naa#a2200169#i#450# EN\\bibl\39639 20260130060530.5 1609-3178 20201002b2020####ek#y0engy0150####ca RU Distance Learning Remains in Demand Journal article Saint-Petersburg LLC SVEN 2020 3 с. Journal article local Markov Anatoliy Arkadievich Maksimova Ekaterina Alekseevna zh-szf.ru