00505naa#a2200169#i#450# EN\\bibl\95582 20250310181256.1 2221-3260 20250130b2025####ek#y0engy0150####ca RU The european union: a period of bifurcation Journal article Yaroslavl Yaroslavl State Technical University 2025 12 с. Journal article local Peftiev Vladimir Il'ich Titova Lyudmila Anatol'evna chemintech.ru