Ali, M. A., Jahan, N., & Islam, A. K. M. A. (2014). Sulvanite Compounds Cu₃TMS₄ (TM = V, Nb and Ta): Elastic, Electronic, Optical and Thermal Properties using First-principles Method. Journal of Scientific Research, 6(3), 407–419. https://doi.org/10.3329/jsr.v6i3.19191