Hydrogenic impurity states in a spherical quantum antidot: Spin-orbit interaction, relativistic correction, and diamagnetic susceptibilityR. Khordad, N. Fathizadeh, S. Davatolhagh and A. R. JafariEur. Phys. J. B, 85 10 (2012) 353DOI: https://doi.org/10.1140/epjb/e2012-30388-3