%0 Journal Article
%A A. Smajdor
%T Additive selections of superadditive set-valued functions.
%J Aequationes mathematicae
%D 1990
%P 121-128
%V 39
%N 2-3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AM2_1990__39_2-3_137343/
%F AM2_1990__39_2-3_137343