%0 Journal Article
%A K.G. Guderley
%A C.L. Keller
%T A Basic Theorem in the Computation of Ellipsoidal Error Bounds.
%J Numerische Mathematik
%D 1972
%P 218-229
%V 19
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NUMA_1972__19_132148/
%F NUMA_1972__19_132148