- A. V. SOLDATOV, J. SEKE, G. ADAM, M. POLAK, “CLOSED ANALYTIC FORM FOR EVALUATION OF RELATIVISTIC BOUND-UNBOUND AND UNBOUND-UNBOUND TRANSITION MATRIX ELEMENTS OF HYDROGENIC ATOMS”, Int. J. Mod. Phys. B, 22, no. 29, 2008, 5095
- Gerardo Gonzalez, S. A. Alexander, R. L. Coldwell, “Relativistic decay rates of one-electron atoms”, J Math Chem, 61, no. 1, 2023, 193
- A. V. SOLDATOV, J. SEKE, G. ADAM, M. POLAK, “HYPERGEOMETRIC FUNCTION REPRESENTATION OF RELATIVISTIC TRANSITION MATRIX ELEMENTS FOR HYDROGENIC ATOMS”, Mod. Phys. Lett. B, 23, no. 02, 2009, 111