TY JOUR TI A MODEL OF THE ECONOMIC EFFECTIVENESS OF BUSINESS PROCESS OUTSOURCING AS A TOOL FOR OPTIMIZING THE ORGANIZATIONAL AND MANAGERIAL CONTOURS OF AN ENTERPRISE KW business process outsourcing KW transaction cost economics KW agency costs KW resource-based view KW asset specificity KW governance maturity KW reliability theory KW expected economic effect KW theory of the firm JO MOSCOW ECONOMIC JOURNAL AU Erzin, I.V. AU Haertdinova, D.R. PY 2026 IS 11 PB Electronic science