Sailaubekov, N. T., Abdygapparova, S. B., Baytanaeva, B. A. and Shayhutdinova, A. K. (2015) “Evaluating the effectiveness of projects on the use of alternative energy sources”, Journal of Economic Research & Business Administration, 106(6), pp. 24–29. Available at: https://be.kaznu.kz/index.php/math/article/view/487 (Accessed: 24 November 2024).