TY JOUR TI Business models in a network economy: Application of network planning methods in project management KW network planning KW project management KW time resources optimization KW network schedule KW uncertainty conditions KW critical path method KW CPM KW program evaluation and revision technique KW PERT KW work detail KW network model adaptation KW probabilistic assessment JO Economic and Social Research AU Kachurenko, D.S. AU Pershin, E.V. AU Vasilyeva, O.V. AU Shikalov, M.S. PY 2026 IS 13 PB National Research University of Electronic Technology