%0 Journal Article
%A Pavel Růžička
%T Free trees and the optimal bound in Wehrung's theorem
%J Fundamenta Mathematicae
%D 2008
%P 217-228
%V 198
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm198-3-2/
%R 10.4064/fm198-3-2
%G de
%F 10_4064_fm198_3_2