The following publications are possibly variants of this publication:
- Oriented coloring of triangle-free planar graphs and 2-outerplanar graphsPascal Ochem, Alexandre Pinlou. endm, 37:123-128, 2011. [doi]
- Oriented colorings of 2-outerplanar graphsLouis Esperet, Pascal Ochem. ipl, 101(5):215-219, 2007. [doi]
- Oriented colorings of triangle-free planar graphsPascal Ochem. ipl, 92(2):71-76, 2004. [doi]
- An oriented coloring of planar graphs with girth at least fiveAlexandre Pinlou. DM, 309(8):2108-2118, 2009. [doi]