«Tastambek K.Т., Аkimbekov N.Sh., Qiao Xiaohui, Token A.I., Zhubanova A.A. Investigation of physico-chemical and microbial properties of lignite samples: al-Farabi Kazakh National University, Kazakhstan, Almaty». Eurasian Journal of Ecology 55, no. 2 (октябрь 7, 2018): 52–60. просмотрено сентябрь 17, 2026. https://bulletin-ecology.kaznu.kz/index.php/1-eco/article/view/815.