@article{05541055,
title = {A traceability conjecture for oriented graphs.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {15},
year = {2008},
zbl = {1178.05046},
language = {en},
url = {http://dml.mathdoc.fr/item/05541055}
}
Frick, Marietjie; van Aardt, Susan A.; Dunbar, Jean E.; Nielsen, Morten H.; Oellermann, Ortrud R. A traceability conjecture for oriented graphs.. The Electronic Journal of Combinatorics [electronic only], Tome 15 (2008) . http://gdmltest.u-ga.fr/item/05541055/