Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1975_127_a8, author = {L. Stupyalis}, title = {Initial-boundary value problems for equations of mixed type}, journal = {Informatics and Automation}, pages = {115--145}, publisher = {mathdoc}, volume = {127}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1975_127_a8/} }
L. Stupyalis. Initial-boundary value problems for equations of mixed type. Informatics and Automation, Boundary value problems of mathematical physics. Part 9, Tome 127 (1975), pp. 115-145. http://geodesic.mathdoc.fr/item/TRSPY_1975_127_a8/