Electronic and optical properties of CuGaS2 nanowires: a study of first principle calculationsPayman Nayebi, Mohsen Emami-Razavi and Esmaeil ZaminpaymaEur. Phys. J. B, 90 1 (2017) 11DOI: https://doi.org/10.1140/epjb/e2016-70061-3