A translation of the paper: On the question of avoiding the infinite "self-reaction" of the electron, by V. Ambarzumian and D. Ivanenko (1930)
arXiv:2105.04360
Abstract
An attempt is made to avoid the difficulty of the infinite reaction of the electron on itself, which occurs in quantum electrodynamics, by introducing difference equations instead of differential equations. This vision allows the difficulty of the relativistic wave equation emphasised by Klein, for example, to be essentially eliminated.
4 pages, translated from: V. Ambarzumian and D. Ivanenko (1930). Zur Frage nach Vermeidung der unendlichen Selbstrückwirkung des Elektrons. Zeitschrift für Physik, Vol.64: p.563--567