RomakaL., RoglP.-F., НorynA., KrayovskyyV., StadnykY., and RomakaV. “Investigation of Crystal and Electronic Structures Features of Hf1-XTmxNiSn Semiconductor Solid Solution”. Physics and Chemistry of Solid State, Vol. 17, no. 2, June 2016, pp. 212-21, doi:10.15330/pcss.17.2.212-221.