1. Photon green function in a stationary homogeneous field of the most general form;Batalin;Zh. Eksp. Teor. Fiz.,1971
2. An operator approach to quantum electrodynamics in external field: mass operator;Baier;Zh. Eksp. Teor. Fiz.,1974
3. An operator approach to quantum electrodynamics in external field 2. Electron loops;Baier;Zh. Eksp. Teor. Fiz.,1975
4. The propagation of photons in homogeneous magnetic fields: index of refraction;Tsai;Phys. Rev. D,1975