A. P. Shcherban, G. P. Kovtun, D. A. Solopikhin, Y. V. Gorbenko, I. V. Kolodiy, and V. D. Virich, “Production Of High-Purity Cadmium Single Crystals By Vertical Directed Crystallization Method”, East Eur. J. Phys., no. 3, pp. 39-45, Aug. 2020.