Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1999_66_3_a6, author = {N. K. Mamadaliev}, title = {Tricomi problem for strongly degenerate equations of parabolic-hyperbolic type}, journal = {Matemati\v{c}eskie zametki}, pages = {385--392}, publisher = {mathdoc}, volume = {66}, number = {3}, year = {1999}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1999_66_3_a6/} }
N. K. Mamadaliev. Tricomi problem for strongly degenerate equations of parabolic-hyperbolic type. Matematičeskie zametki, Tome 66 (1999) no. 3, pp. 385-392. http://geodesic.mathdoc.fr/item/MZM_1999_66_3_a6/