Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1961_138_3_a23, author = {L. N. Gutman and L. N. {\CYRM}{\cyra}l'{\cyrk}{\cyro}}, title = {On theory of fronts}, journal = {Doklady Akademii Nauk}, pages = {587--590}, publisher = {mathdoc}, volume = {138}, number = {3}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_3_a23/} }
L. N. Gutman; L. N. Маl'ко. On theory of fronts. Doklady Akademii Nauk, Tome 138 (1961) no. 3, pp. 587-590. http://geodesic.mathdoc.fr/item/DAN_1961_138_3_a23/