Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1978_1_a0, author = {M. D. Bronshtein and V. R. Fridlender}, title = {A~characteristic {Cauchy} problem}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {3--7}, publisher = {mathdoc}, number = {1}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1978_1_a0/} }
M. D. Bronshtein; V. R. Fridlender. A~characteristic Cauchy problem. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1978), pp. 3-7. http://geodesic.mathdoc.fr/item/IVM_1978_1_a0/