@article{05852461,
title = {Graphs with four boundary vertices.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {18},
year = {2011},
zbl = {1205.05194},
language = {en},
url = {http://dml.mathdoc.fr/item/05852461}
}
Müller, Tobias; Pór, Attila; Sereni, Jean-Sébastien. Graphs with four boundary vertices.. The Electronic Journal of Combinatorics [electronic only], Tome 18 (2011) . http://gdmltest.u-ga.fr/item/05852461/