Ali, M. A., N. Jahan, and A. K. M. A. Islam. 2014. “Sulvanite Compounds Cu<sub>3</sub>TMS<sub>4</Sub> (TM = V, Nb and Ta): Elastic, Electronic, Optical and Thermal Properties Using First-Principles Method”. Journal of Scientific Research 6 (3):407-19. https://doi.org/10.3329/jsr.v6i3.19191.