Sharapiyeva, Madina D., Kunanbayeva Duissekul, Nurseiytova Gulmira, and Kozhamkulova Zhanna. 2019. “Energy Efficiency of Transport and Logistics Infrastructure: The Example of the Republic of Kazakhstan”. International Journal of Energy Economics and Policy 9 (5):331-38. https://econjournals.net.tr/index.php/ijeep/article/view/8204.