%0 Journal Article
%A V. Pták
%T A combinatorial lemma on the existence of convex means and its application to weak compactness
%J Matematika
%D 1966
%P 44-59
%V 10
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MAT_1966_10_6_a2/
%G ru
%F MAT_1966_10_6_a2