%0 Journal Article %A J. CHRISTIANSEN %T Handbook Series Numerical Integration. Numerical Solution of Ordinary Simultaneous Differential Equations of the 1st Order Using a Method for Automatic Step Change. %J Numerische Mathematik %D 1970 %P 317-324 %V 14 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1970__14_131955/ %F NUMA_1970__14_131955