Frolova, L., A. Derimova, T. Butyrina, and M. Savchenko. “An Investigation of the Mechanism Magnetite Precipitation Using Ammonium Carbonate”. Eurasian Chemico-Technological Journal 20, no. 3 (September 7, 2018): 223-228. Accessed January 18, 2020. http://ect-journal.kz/index.php/ectj/article/view/725.