Geodesic
Derivation of a quasipotential equation by the Fock–Podolsky method
Teoretičeskaâ i matematičeskaâ fizika, Tome 28 (1976) no. 1, pp. 3-26 
D. I. Blokhintsev; V. A. Rizov; I. T. Todorov. Derivation of a quasipotential equation by the Fock–Podolsky method. Teoretičeskaâ i matematičeskaâ fizika, Tome 28 (1976) no. 1, pp. 3-26. http://geodesic.mathdoc.fr/item/TMF_1976_28_1_a0/
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     title = {Derivation of a~quasipotential equation by the {Fock{\textendash}Podolsky} method},
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Voir la notice de l'article provenant de la source Math-Net.Ru

The Fock–Podolsky (Tamm–Dancoff) method is used to derive a quasipotential equation for the one-time wave ftmction from the equations of quantum electrodynamics. The connection between this equation and the inhomogeneous equation for the four-point Green's function is established. It is shown that although there is no manifest covariance of the expressions for the Green's function in the Coulomb gauge, one can perform a consistent renormalization of the divergent integrals in at least the second order in the charge $e$. It is noted that in this approach one can derive (in a certain approximation) the Breit equation for the fine structure of energy levels.

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