00602naa#a2200181#i#450# EN\\bibl\105280 20251208161523.1 2221-3260 20250831b2025####ek#y0engy0150####ca RU Social Solidarity as an Economic Category: Substantiation and Empirical Aspects of the Study Journal article Yaroslavl Yaroslavl State Technical University 2025 12 с. Journal article local Popova Irina Victorovna Shishkina Nadezhda Alexandrovna Zorin Aleksey Viktorovich chemintech.ru