Cardona, M. Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Karaiskaj, D., Meyer, T. A., Thewalt, M. L. W., & Cardona, M. (2003). Dependence of the ionization energy of shallow donors and acceptors in silicon on the host isotopic mass. Physical Review B, 68(12): 121201(R).