@article{DAN_1967_172_2_a20,
     author = {M. F. Shirokov and L. I. Bud'ko},
     title = {Momentum and energy of gravitational waves},
     journal = {Doklady Akademii Nauk},
     pages = {326--329},
     publisher = {mathdoc},
     volume = {172},
     number = {2},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_172_2_a20/}
}