molqed

[Bia11] Raffaello Bianco and Raffaele Resta, Mapping topological order in coordinate space, Physical Review B 84, 241106(R) (2011) (pdf)

[Hai07] Christian Hainzl, Mathieu Lewin and Jan Philip Solovej, The mean‐field approximation in quantum electrodynamics: The no‐photon case, Comm. Pure Appl. Math., 60 (2007) 546-596 (pdf)

[Sau03] T. Saue and L. Visscher: Four-component electronic structure methods for molecules, in S. Wilson and U. Kaldor (eds.): ``Theoretical chemistry and physics of heavy and superheavy elements'', Kluwer, Dordrecht 2003 (pdf)

[Sch15] Jan Schlemmer and Jochen Zahn, The current density in quantum electrodynamics in external potentials, Annals of Physics 359 (2015) 31–45 (pdf)

[Sch48] Julian Schwinger, Quantum Electrodynamics. I. A Covariant Formulation. Phys. Rev. 74 (1948) 1439(pdf)

[Sch49] Julian Schwinger, Quantum Electrodynamics. II. Vacuum polarization and Self-Energy. Phys. Rev. 75 (1949) 651 (pdf)