@article{DAN_1980_254_1_a10,
     author = {U. N. Zakirov},
     title = {Equations of motion of a cosmic body of varying composition, on the basis of the theory of relativity},
     journal = {Doklady Akademii Nauk},
     pages = {50--52},
     publisher = {mathdoc},
     volume = {254},
     number = {1},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_254_1_a10/}
}