. A. Nizhegorodov, . A. Gavrilin, . B. Moyzes, and . K. Kuvshinov, “TECHNOLOGY AND EQUIPMENT FOR PROCESSING OF LARGE-SIZED VERMICULITE MICAS OF THE KOVDOR DEPOSIT”, Eurasian phys. tech. j., vol. 17, no. 2(34), pp. 100–109, Sep. 2020.