TY JOUR TI MATHEMATICAL MODEL OF DEVELOPMENT MANAGEMENT OF THE CONSUMER MARKET OF THE CITY OF ANGARSK KW mathematical model KW system analysis KW descriptive statistics KW regression analysis KW Fisher criterion KW Student criterion. JO Modern Technologies and Scientific and Technological Progress AU Ul'yanova, A.V. AU Istomin, A.. AU Krivov, M.V. PY 2019 IS 2019 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»