@article{VMUMM_2015_3_a3,
     author = {O. A. Zagryadskii and D. A. Fedoseev},
     title = {The global and local realizability of {Bertrand} {Riemannian} manifolds as surfaces of revolution},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {18--24},
     publisher = {mathdoc},
     number = {3},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2015_3_a3/}
}