00598naa#a2200181#i#450# EN\\bibl\81141 20251207031814.7 2221-3260 20231230b2023####ek#y0engy0150####ca RU Theoretical and methodological foundations of research in the Master's thesis Journal article Yaroslavl Yaroslavl State Technical University 2023 2 с. Journal article local Gordeev Valery Alexandrovich Savicheva Anna Nikolaevna Serebryakov Evgeny Maksimovich theoreticaleconomy.ru