%0 Journal Article
%A S. Czerwik
%T Solutions of class \(C^r\) with respect to the parameter of a linear functional equation
%J Commentationes Mathematicae
%D 1974
%P  341-345
%V 17
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/cm.v17i2.5779/
%R 10.14708/cm.v17i2.5779
%G pl
%F 10_14708_cm_v17i2_5779