TY CONF TI SERVICE SYSTEM MODELING: PROBLEMS AND SOLUTIONS KW Modeling KW Service systems JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2025 AU Silonov, V.I. AU Prokopenko, I.A. AU Zalenskaya, N.Y. PY 2025 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov