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