TY JOUR TI Implementation of Mathematical Modeling Tools for Analysis of Economic Processes and Forecasting of Expenses KW mathematical model KW cost forecasting KW modeling of economic processes KW planning KW risk assessment JO Scientific Research and Development. Economics of the Firm AU Kulyasova, A.. AU Bondarev, V.M. PY 2021 IS 10 PB INFRA-M Academic Publishing LLC.