F. . Kapustin, V. Ufimtsev, A. Vishnevsky, I. . Fomina, A. . Kapustin, and K. . Zemlyanoy, “The Use of Reftinskaya State District Power Plant Fly Ash in the Production of Building Materials and Products”, Kms, vol. 6, no. 1, pp. 133–142, Dec. 2020.