%0 Journal Article
%A Pullman, N.
%T On the Number of Positive Entries in the Powers of a Non-Negative Matrix
%J Canadian mathematical bulletin
%D 1964
%P 525-537
%V 7
%N 4
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1964-049-x/
%R 10.4153/CMB-1964-049-x
%F 10_4153_CMB_1964_049_x