%0 Journal Article
%A M. Kwapisz
%T On the approximate solutions of an abstract equation
%J Annales Polonici Mathematici
%D 1967
%P 47-60
%V 19
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap-19-1-47-60/
%R 10.4064/ap-19-1-47-60
%G en
%F 10_4064_ap_19_1_47_60