Huynh, Bach Phuc Hau, et al. “An Investigation of the Geometrical and Electronic Structures of MnB0 − + Clusters by Multiconfigurational CASSCF CASPT2 Method”. Dong Thap University Journal of Science, no. 30, Feb. 2018, pp. 95-101, doi:10.52714/dthu.30.2.2018.557.