Benjamin Lévêque, Frédéric Maffray. Coloring Bull-Free Perfectly Contractile Graphs. SIAM J. Discrete Math., 21(4):999-1018, 2008. [doi]
@article{LevequeM08,
title = {Coloring Bull-Free Perfectly Contractile Graphs},
author = {Benjamin Lévêque and Frédéric Maffray},
year = {2008},
doi = {10.1137/06065948X},
url = {http://dx.doi.org/10.1137/06065948X},
tags = {graph-rewriting, rewriting},
researchr = {https://researchr.org/publication/LevequeM08},
cites = {0},
citedby = {0},
journal = {SIAM J. Discrete Math.},
volume = {21},
number = {4},
pages = {999-1018},
}