T. T. Thai, P. P. Hung, V. T. Son and V. T. Bich, Optical Properties of \(\text{CuInS}_{2}\) Thin Films Prepared by Spray Pyrolysis, Comm. Phys. 22 (2012) 59–64. DOI: https://doi.org/10.15625/0868-3166/22/1/633.