%0 Journal Article %A Chartrand, Gary %A Zhang, Ping %T $H$-convex graphs %J Mathematica Bohemica %D 2001 %P 209-220 %V 126 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.2001.133908/ %R 10.21136/MB.2001.133908 %G en %F 10_21136_MB_2001_133908