@article{DAN_1961_138_1_a25,
     author = {V. A. Shcherbina},
     title = {Causality condition and nonlocality of the {Lagrangian} in quantum electrodynamics},
     journal = {Doklady Akademii Nauk},
     pages = {93--95},
     publisher = {mathdoc},
     volume = {138},
     number = {1},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_1_a25/}
}