Soltangazinov, Aibek, Zubirash Smagulova, Maral Amirova, Lyudmila Kashuk, Madina Karimbergenova, Akmaral Kadyrova, and Olga Zhaltyrova. 2019. “Energy Efficiency As a Factor of Sustainable Development in Kazakhstan”. International Journal of Energy Economics and Policy 10 (1):325-30. https://econjournals.com/index.php/ijeep/article/view/8618.