[1]
Frick, M., van Aardt, S.A., Dunbar, J.E., Nielsen, M.H. and Oellermann, O.R. 2008. A Traceability Conjecture for Oriented Graphs. The Electronic Journal of Combinatorics. 15, 1 (Dec. 2008), R150. DOI:https://doi.org/10.37236/874.