@article{DAN_1975_225_1_a18,
     author = {R. F. Polishchuk},
     title = {The gravitational field and conservation laws},
     journal = {Doklady Akademii Nauk},
     pages = {74--77},
     year = {1975},
     volume = {225},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_225_1_a18/}
}