Belgibayeva, A. S., S. M. Kozbakarova, B. M. Ashim, Ye. K. Ongarbayev, and S. Farrell. “A Comparative Analysis of Biodiesels Produced from Vegetable Oils and Their Waste”. International Journal of Biology and Chemistry 5, no. 1 (June 20, 2013): 81–85. Accessed April 28, 2024. https://ijbch.kaznu.kz/index.php/kaznu/article/view/85.