G. L. Myronchuk, O. V. Zamurueva, O. V. Parasyuk, L. V. Piskach, A. O. Fedorchuk, N. S. Alzayed, A. M. El-Naggar, J. Ebothé, M. Lis, I. V. Kityk, Structural and optical properties of novel optoelectronic Tl(1-x)In(1-x)SixSe2 single crystals, J. Mater. Sci: Mater. Electron. 25 (2014)322– 63232 DOI: 10.1007/s10854-014-2007-y