Tom Kelly, Luke Postle. Exponentially many 4-list-colorings of triangle-free graphs on surfaces. Journal of Graph Theory, 87(2):230-238, 2018. [doi]
@article{KellyP18,
title = {Exponentially many 4-list-colorings of triangle-free graphs on surfaces},
author = {Tom Kelly and Luke Postle},
year = {2018},
doi = {10.1002/jgt.22153},
url = {https://doi.org/10.1002/jgt.22153},
researchr = {https://researchr.org/publication/KellyP18},
cites = {0},
citedby = {0},
journal = {Journal of Graph Theory},
volume = {87},
number = {2},
pages = {230-238},
}