First-principles study of structural, electronic, linear and nonlinear optical properties of Ga2PSb ternary chalcopyriteT. Ouahrani, A. H. Reshak, A. Otero de la Roza, M. Mebrouki, V. Luaña, R. Khenata and B. AmraniEur. Phys. J. B, 72 3 (2009) 361-366DOI: https://doi.org/10.1140/epjb/e2009-00345-6