00647naa#a2200169#i#450# EN\\bibl\131840 20260726172422.7 2712-7516 20260726b2026####ek#y0engy0150####ca RU Systematic Analysis of Institutional Factors in the Development of Procurement Outsourcing and Modeling Their Impact Journal article Moscow ITBO University 2026 0 с. Journal article local Экономическая политика. Управление и планирование в экономике. 338.2 Levkina Anastasiia Sergeevna zhpi.ru