%0 Journal Article
%A S. Brzychczy
%T On a certain property of a transformation in Hilbert space in connection with the theory of differential equations
%J Colloquium Mathematicum
%D 1967
%P 143-146
%V 18
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-18-1-143-146/
%R 10.4064/cm-18-1-143-146
%G en
%F 10_4064_cm_18_1_143_146