%0 Journal Article
%A de Valk, V.
%T A problem on $0-1$ matrices
%J Compositio Mathematica
%D 1989
%P 139-179
%V 71
%N 2
%I Kluwer Academic Publishers
%U http://www.numdam.org/item/CM_1989__71_2_139_0/
%G en
%F CM_1989__71_2_139_0