Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MAT_1963_7_2_a4, author = {H.-O. Kreiss}, title = {\"Uber sachgem\"a\ss e {Cauchyprobleme} f\"ur {Systeme} von linearen partiellen {Differentialgleichungen}}, journal = {Matematika}, pages = {39--56}, publisher = {mathdoc}, volume = {7}, number = {2}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1963_7_2_a4/} }
H.-O. Kreiss. \"Uber sachgem\"a\ss e Cauchyprobleme f\"ur Systeme von linearen partiellen Differentialgleichungen. Matematika, Tome 7 (1963) no. 2, pp. 39-56. http://geodesic.mathdoc.fr/item/MAT_1963_7_2_a4/