For citations:
Chekushin V.S., Oleynikova N.V., Baksheev S.P., Dontsov A.V. Direct reduction of heavy non-ferrous metals from sulfide compounds. Izvestiya. Non-Ferrous Metallurgy. 2020;(5):4-12. (In Russ.) https://doi.org/10.17073/0021-3438-2020-5-4-12