Annals of Physics · 1965 · 109 citations · 3 references
Natural SciencesPhysicsOpticsSpectroscopyFine StructureRadiative ProcessesRadiative TransferLamb ShiftRadiative Transitions
3
Possible Effects of Nuclear Spin on X-Ray Terms
G. Breit · Physical Review · 1930 · 211 citations
Dirac's One-Electron Problem in Momentum Representation
A. Rubinowicz · Physical Review · 1948 · 37 citations