TY JOUR TI Analysis of current challenges facing small chemical enterprises in the Nizhny Novgorod Region in 2020-2026 and cost management KW chemical industry KW small and medium-sized enterprises KW material intensity KW cost classification KW cost management JO JOURNAL OF MONETARY ECONOMICS AND MANAGEMENT AU Krasil'nikov, D.V. PY 2026 IS 0 PB ITBO University