Choudhary, S., Tomar, S., Kumar, D., Kumar, S., & Verma, A. S. (2021). Investigations of Lead Free Halides in Sodium Based Double Perovskites Cs2NaBiX6(X=Cl, Br, I): an Ab Intio Study. East European Journal of Physics, (3), 74-80. https://doi.org/10.26565/2312-4334-2021-3-11