@article{DAN_1975_225_2_a12,
     author = {Z. A. Steingrad},
     title = {On the statement of {Cauchy} problem with arbitrary selection of the reference system in {Einstein's} theory of gravity},
     journal = {Doklady Akademii Nauk},
     pages = {290--292},
     publisher = {mathdoc},
     volume = {225},
     number = {2},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_225_2_a12/}
}