Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1996_349_5_a6, author = {N. N. Nefedov}, title = {Two-dimensional contrast structures of step type: asymptotics,}, journal = {Doklady Akademii Nauk}, pages = {603--605}, publisher = {mathdoc}, volume = {349}, number = {5}, year = {1996}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1996_349_5_a6/} }
N. N. Nefedov. Two-dimensional contrast structures of step type: asymptotics,. Doklady Akademii Nauk, Tome 349 (1996) no. 5, pp. 603-605. http://geodesic.mathdoc.fr/item/DAN_1996_349_5_a6/