Amirbekuly, Y., and A.E. Rakhimbekova. “Structure of the Added Value Chain As a Factor of Competitiveness of the Sector ”. BUKETOV BUSINESS REVIEW 89, no. 1 (March 30, 2018): 40–48. Accessed February 4, 2026. https://bbr.buketov.edu.kz/economy-vestnik/article/view/429.