Optical transition rates of a polar quantum disc with conical disclination in a magnetic field: effects of some forms of the electric potentialVinod Kumar, Surender Pratap, Moletlanyi Tshipa and Monkami MasaleEur. Phys. J. Plus, 139 12 (2024) 1125DOI: https://doi.org/10.1140/epjp/s13360-024-05909-2