TY - JOUR AU - Weisz, Juraj TI - A posteriori error estimate of approximate solutions to a mildly nonlinear elliptic boundary value problem JO - Commentationes Mathematicae Universitatis Carolinae PY - 1990 SP - 315 EP - 322 VL - 31 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1990__31_2_a13/ LA - en ID - CMUC_1990__31_2_a13 ER -