00616naa#a2200169#i#450# EN\INFRA-M\bibl\97548 20251228134023.7 2500-333X 20250328b2025####ek#y0engy0150####ca RU "Solidarity" as a basis for the sustainability of the compulsory pension insurance system: constitutional-legal and financial-legal aspects Journal article Moscow INFRA-M Academic Publishing LLC. 2025 15 с. Journal article local Право. Юридические науки. 34 Ivanyuzhenko A. B. zh-szf.ru