Nisina, O. E., S. V. Lanovetskiy, O. K. Kosvintsev, and M. A. Kulikov. “STUDY OF THE EXTRACTION PROCESS OF CALCIUM SULFATE IMPURITY FROM HALITE WASTES OF VARIOUS ORIGINS”. ChemChemTech, Vol. 65, no. 4, Mar. 2022, pp. 101-7, doi:10.6060/ivkkt.20226504.6483.