Diamagnetic susceptibility of an off-center hydrogenic donor in pyramid-like and cone-like quantum dotsZ. Avazzadeh, H. Bahramiyan, R. Khordad and S. A. MohammadiEur. Phys. J. Plus, 131 4 (2016) 121DOI: https://doi.org/10.1140/epjp/i2016-16121-8