Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1980_10_a10, author = {R. M. Geidel'man}, title = {Surfaces carrying a~net of lines of curvature}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {66--69}, publisher = {mathdoc}, number = {10}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1980_10_a10/} }
R. M. Geidel'man. Surfaces carrying a~net of lines of curvature. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 10 (1980), pp. 66-69. http://geodesic.mathdoc.fr/item/IVM_1980_10_a10/