Arlievsky, M., G. Vlasova, P. Vlasov, and R. Kurtenkov. 2018. “Investigation on the Process to Obtain Gypsum With Sulphuric Acid Recovered from Spent Rechargeable Batteries”. Chemical Bulletin of Kazakh National University 63 (3), 27-31. https://bulletin.chemistry.kz/index.php/kaznu/article/view/965.