Infrared reflection spectra of the films of topological insulator Pb1-xSnxSe on the substrates ZnTe/GaAsN.N. Novikova, V.A. Yakovlev, I.V. Kucherenko, G. Karczewski and S. ChusnutdinowEPJ Web Conf., 132 (2017) 03059DOI: https://doi.org/10.1051/epjconf/201713203059