%0 Journal Article %T Assessment of the effectiveness of the import substitution program (a case study in the mushroom and truffle cultivation industry) %A Niyazova, A.S. %K import substitution; government support; agriculture; mushroom and truffle production; market power concentration indices %J JOURNAL OF REGIONAL AND INTERNATIONAL COMPETITIVENESS %D 2025 %N 6 %P 8 %I Yaroslavl State Technical University