1. A. M. Pleshkanovskaya and E. D. Savchenko, Colloquium-journal 4, 52–5 (2020).
2. M. B. Boydadaev, Z. T. Munavvarkhonov, A. M. Madrakhimov and S. K. Imomnazarov, Universum: technical sciences 3-2, 26–9 (2021).
3. K. O. Khudenkikh, News of Higher Educational Institutions Mining Journal 3 4–11 (2018).
4. I. M. Baranov, Building materials 7, 4–5 (2006).
5. V. F. Khritankov, L. V. Shantina, A. S. Denisov, A. P. Pichugin, Building materials 7, 10–1 (2006).