@article{DAN_1987_294_2_a11,
     author = {Yu. N. Efremov and E. D. Pavlovskaya},
     title = {Dating the {``Almagest''} from the proper motions of stars},
     journal = {Doklady Akademii Nauk},
     pages = {310--313},
     publisher = {mathdoc},
     volume = {294},
     number = {2},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_294_2_a11/}
}