Gusman Kenzhetayev, Syrlybekkyzy Samal, и Lyailim Taizhanova. «WASTEWATER EVAPORATOR POND ASSESSMENT OF „CASPI BITUM“ LLP». Academic Journal of Physical and Chemical Sciences, вып. 6, декабрь 2020 г., сс. 88-95, https://journals.nauka-nanrk.kz/reports-science/article/view/1064.