@article{10_21136_MB_2001_133908,
     author = {Chartrand, Gary and Zhang, Ping},
     title = {$H$-convex graphs},
     journal = {Mathematica Bohemica},
     pages = {209--220},
     publisher = {mathdoc},
     volume = {126},
     number = {1},
     year = {2001},
     doi = {10.21136/MB.2001.133908},
     mrnumber = {1826483},
     zbl = {0977.05044},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2001.133908/}
}