Spanov, M. U., Zh. Zh. Yeszhanova, and A. S. Ussenova. “Evaluation of Human Capital Using the Example of the Chemical and Petrochemical Industry of the Republic of Kazakhstan Using the Cobb-Douglas Production Function”. Journal of Economic Research & Business Administration 145, no. 3 (September 20, 2023): 103–121. Accessed December 21, 2024. https://be.kaznu.kz/index.php/math/article/view/2629.