00739naa#a2200181#i#450# EN\\bibl\38458 20240430222302.2 2686-7788 20200623b2020####ek#y0engy0150####ca RU BEST RETIREMENT SYSTEMS IN FOREIGN COUNTRIES Journal article Angarsk Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University» 2020 4 с. Journal article local Математическое моделирование в общественных и гуманитарных науках. 00.77 grnti Dugar-Zhabon Ruslana Stanislavovna Kuraeva Oksana Sergeevna angtu.editorum.ru