@article{NUMA_1975__24_132334,
     author = {W. Hofmann},
     title = {Monotonies\"atze f\"ur hyperbolische {Anfangswertaufgaben} und {Einschlie{\ss}ung} von {L\"osungen.}},
     journal = {Numerische Mathematik},
     pages = {137--150},
     publisher = {mathdoc},
     volume = {24},
     year = {1975},
     zbl = {0295.65051},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1975__24_132334/}
}