Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1980_9_a10, author = {Ya. L. Shapiro}, title = {A~quasigeodesic mapping}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {53--55}, publisher = {mathdoc}, number = {9}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1980_9_a10/} }
Ya. L. Shapiro. A~quasigeodesic mapping. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1980), pp. 53-55. http://geodesic.mathdoc.fr/item/IVM_1980_9_a10/