@article{DAN_1964_154_3_a20,
     author = {G. A. Sokolik},
     title = {A spinor formula for the gravitational field},
     journal = {Doklady Akademii Nauk},
     pages = {565--566},
     publisher = {mathdoc},
     volume = {154},
     number = {3},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_154_3_a20/}
}