%0 Journal Article %A R.A. LaBudde %A D. Greenspan %T Energy and Momentum Conserving Methods of Arbitrary Order for the Numerical Integration of Equations of Motion. I. Motion of a Single Particle. %J Numerische Mathematik %D 1975 %P 323-346 %V 25 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1975__25_132385/ %F NUMA_1975__25_132385