Daniel W. Cranston. A characterization of (4, 2)-choosable graphs. Journal of Graph Theory, 92(4):460-487, 2019. [doi]
@article{Cranston19-0, title = {A characterization of (4, 2)-choosable graphs}, author = {Daniel W. Cranston}, year = {2019}, doi = {10.1002/jgt.22464}, url = {https://doi.org/10.1002/jgt.22464}, researchr = {https://researchr.org/publication/Cranston19-0}, cites = {0}, citedby = {0}, journal = {Journal of Graph Theory}, volume = {92}, number = {4}, pages = {460-487}, }