%0 Journal Article %A W. Busch %A R. Esser %A W. Hackbusch %A U. Herrmann %T Extrapolation Applied to the Method of Characteristics for a first Order System of Two Partial Differential Equations. Part One : The Initial Value Problem. %J Numerische Mathematik %D 1975 %P 331-354 %V 24 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1975__24_132348/ %F NUMA_1975__24_132348