L. Romaka, Y. Stadnyk, V. Romaka, V. Krayovsky, P.-F. Rogl, and Нoryn A., “Investigation of Band Structure of ZrNiSn1-xGax Semiconductor Solid Solution”, Phys.Chem.Sol.State, vol. 18, no. 2, pp. 187–193, Jun. 2017.