TY - JOUR AU - M. Kwapisz TI - On the convergence of approximate iterations for an abstract equation JO - Annales Polonici Mathematici PY - 1969 SP - 73 EP - 87 VL - 22 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap-22-1-73-87/ DO - 10.4064/ap-22-1-73-87 LA - en ID - 10_4064_ap_22_1_73_87 ER -