TY JOUR TI TESTING OF TWO ALTERNATIVE HYPOTHESES FOR THE INFORMATION SYSTEM DIAGNOSTICS LEAKAGE OF GAS SUPPLY SYSTEMS KW Diagnosis of leaks KW gas supply systems KW mathematical modeling JO Modeling of systems and processes AU Sazonova, S.. AU Serbulov, Y.S. AU Kuripta, O.. PY 2015 IS 7 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov