Quasipotential in the Fourth Order of Perturbation Theory. Unequal mass case
arXiv:hep-ph/9305300
Abstract
The quasipotential in the fourth order of perturbation theory is calculated in the Coulomb gauge for the unequal mass particles. It could be used for the future calculations of energy spectra in two-body systems.
LaTeX file, 7 pages, 1 figure, JINR Communications E2-92-440