@article{DAN_1989_304_2_a10,
     author = {V. A. Sharafutdinov},
     title = {The ray transform of symmetric tensor fields},
     journal = {Doklady Akademii Nauk},
     pages = {305--308},
     publisher = {mathdoc},
     volume = {304},
     number = {2},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_304_2_a10/}
}