H. Bethe, E. Salpeter: A Relativistic Equation for Bound-State Problems. In: Physical Review. Band82, Nr.2, 15. April 1951, S.309–310, doi:10.1103/PhysRev.82.291 (Teil der Proceedings of the American Physical Society. New York, 1.–3. Februar 1951).
E. E. Salpeter, H. A. Bethe: A Relativistic Equation for Bound-State Problems. In: Physical Review. Band84, Nr.6, 15. Dezember 1951, S.1232, doi:10.1103/PhysRev.84.1232.
W. A. Newcomb, E. E. Salpeter: Mass Corrections to the Hyperfine Structure in Hydrogen. In: Physical Review. Band97, Nr.4, 15. Februar 1955, S.1146–1158, doi:10.1103/PhysRev.97.1146.
D. B. Leinweber, L. von Smekal, A. G. Williams, P. Maris, P. C. Tandy: Proceedings of the Cairns Topical Workshop on Light-Cone QCD and Nonperturbative Hadron PhysicsQCD modeling of hadron physics. In: Nuclear Physics B. Band161, November 2006, S.136–152, hier S. 136., doi:10.1016/j.nuclphysbps.2006.08.012.