Rassulova, A., and A. Umyrzakova. “Ways to Improve the Competitiveness of Butter Producers in the Context of Import Substitution”. BUKETOV BUSINESS REVIEW 102, no. 2 (June 30, 2021): 99–107. Accessed December 7, 2025. https://bbr.buketov.edu.kz/economy-vestnik/article/view/213.