Neil Robertson, Daniel P. Sanders, Paul D. Seymour, Robin Thomas. The Four-Colour Theorem. Journal of Combinatorial Theory, Series A, 70(1):2-44, 1997. [doi]
@article{RobertsonSST97,
title = {The Four-Colour Theorem},
author = {Neil Robertson and Daniel P. Sanders and Paul D. Seymour and Robin Thomas},
year = {1997},
doi = {10.1006/jctb.1997.1750},
url = {http://dx.doi.org/10.1006/jctb.1997.1750},
researchr = {https://researchr.org/publication/RobertsonSST97},
cites = {0},
citedby = {0},
journal = {Journal of Combinatorial Theory, Series A},
volume = {70},
number = {1},
pages = {2-44},
}