Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1992_5_a2, author = {L. V. Zilbergleit and V. V. Lychagin}, title = {Connections and singularities}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {25--35}, publisher = {mathdoc}, number = {5}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1992_5_a2/} }
L. V. Zilbergleit; V. V. Lychagin. Connections and singularities. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (1992), pp. 25-35. http://geodesic.mathdoc.fr/item/IVM_1992_5_a2/