%0 Journal Article
%T On set-valued solutions of a functional equation of Drygas
%A Smajdor, Wilhelmina
%J aequationes mathematicae
%V 77
%N 1
%P 89-97
%@ 0001-9054
%D 2009-03-01
%I Birkhäuser-Verlag
%~ DeepDyve