@article{DAN_1978_241_2_a7,
     author = {V. G. Romanov},
     title = {Integral geometry on geodesics of an isotropic {Riemannian} metric},
     journal = {Doklady Akademii Nauk},
     pages = {290--293},
     publisher = {mathdoc},
     volume = {241},
     number = {2},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_241_2_a7/}
}