TY - JOUR AU - K.G. Guderley AU - C.L. Keller TI - A Basic Theorem in the Computation of Ellipsoidal Error Bounds. JO - Numerische Mathematik PY - 1972 SP - 218 EP - 229 VL - 19 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/NUMA_1972__19_132148/ ID - NUMA_1972__19_132148 ER -