00511naa#a2200157#i#450# EN\\bibl\81529 20240920124900.5 2221-3260 20230930b2023####ek#y0engy0150####ca RU Spillover effects of integration: a study of the channel of interregional trade in the EAEU Journal article Yaroslavl Yaroslavl State Technical University 2023 7 с. Journal article local Shkiotov Sergey Vladimirovich comincon.ru