Chemical bond approach to optical properties of some flash evaporated Se100−XSbX chalcogenide alloysC.M. Muiva, T.S. Sathiaraj and J.M. MwaboraEur. Phys. J. Appl. Phys., 59 1 (2012) 10301DOI: https://doi.org/10.1051/epjap/2012120082