Lysytskyi, V. L., and M. O. Boiko. “IDENTIFICATION OF PROBLEM SITUATIONS IN FUNCTIONAL DIAGNOSTICS OF INTELLIGENT BUSINESS SYSTEMS”. Bulletin of National Technical University "KhPI". Series: System Analysis, Control and Information Technologies, no. 2 (4), Dec. 2020, pp. 3-9, doi:10.20998/2079-0023.2020.02.01.