00468naa#a2200169#i#450# EN\INFRA-M\bibl\13914 20250107191607.2 2587-6279 20161220b2016####ek#y0engy0150####ca RUS RU Model of self-financing portfolio formation Journal article Moscow INFRA-M Academic Publishing LLC. 2016 10 с. Journal article local Petrenko Elena zh-szf.ru