TY JOUR TI OUTSOURCING IN HUMAN RESOURCES MANAGEMENT: KEY ASPECTS, PROS AND CONS OF IMPLEMENTATION KW outsourcing KW personnel management KW optimization KW cost reduction KW increased flexibility KW HR services KW risks JO MOSCOW ECONOMIC JOURNAL AU Iskandaryan, G.H. AU Zadoenko, V.I. AU Shil'd, A.V. PY 2025 IS 10 PB Electronic science