TY JOUR TI Analysis of the state of the metallurgical industry KW metallurgical industry KW industry risk KW industry concentration coefficient KW Herfindahl-Hirschman index KW industry life cycle JO Theoretical economics AU Zinov'eva, E.G. AU Kostina, N.N. AU Limareva, Y.A. PY 2023 IS 0 PB Yaroslavl State Technical University