@article{DAN_1972_204_6_a0,
     author = {Yu. E. Anikonov},
     title = {On a problem of defining a {Riemannian} metric},
     journal = {Doklady Akademii Nauk},
     pages = {1287--1288},
     publisher = {mathdoc},
     volume = {204},
     number = {6},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_204_6_a0/}
}