@article{DAN_1979_245_3_a0,
     author = {Yu. E. Anikonov},
     title = {Formulas and inequalities in an inverse kinematic problem},
     journal = {Doklady Akademii Nauk},
     pages = {521--523},
     publisher = {mathdoc},
     volume = {245},
     number = {3},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_245_3_a0/}
}