Anuar, K., W. T. Tan, N. Saravanan, L. K. Khor, and S. M. Ho. “Effects of Deposition Time on the Chemical Bath-Deposited CuS Thin Films”. Journal of Nepal Chemical Society, vol. 25, June 2010, pp. 2-8, doi:10.3126/jncs.v25i0.3276.