%0 Journal Article
%A Nobuaki Obata
%T Positive $Q$-matrices of graphs
%J Studia Mathematica
%D 2007
%P 81-97
%V 179
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/sm179-1-7/
%R 10.4064/sm179-1-7
%G en
%F 10_4064_sm179_1_7