00582naa#a2200181#i#450# EN\\bibl\55190 20241230215045.1 1729-3901 20221129b2022####ek#y0engy0150####ca ENG RU On periodic solutions of linear parabolic problems with nonlocal boundary conditions Journal article Simferopol V.I. Vernadsky Crimean Federal University 2022 4 с. Journal article local Введение в анализ. 517.1 ENG Solonukha O. V. cfuv.editorum.ru