@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},
     year = {1963},
     volume = {7},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1963_7_2_a4/}
}