Zhantasov K.T., Kozhakhmetova A.M., Dzhanmuldaeva Zh.K., Sarkulakova R.A., и Almenova F.B. «ABOUT THE PRODUCTION OF FERTILIZER MIXTURE WITH THE USE OF TECHNOGENIC WASTE». Academic Scientific Journal of Chemistry, вып. 4, сентябрь 2020 г., сс. 58-63, http://89.250.84.46/chemistry-technology/article/view/454.