@article{01021588, title = {A new proof of the four-colour theorem.}, journal = {Electronic Research Announcements of the American Mathematical Society [electronic only]}, volume = {02}, year = {1996}, pages = {17-25}, doi = {10.1090/S1079-6762-96-00003-0}, zbl = {0865.05039}, language = {en}, url = {http://dml.mathdoc.fr/item/01021588} }
Robertson, Neil; Sanders, Daniel P.; Seymour, Paul; Thomas, Robin. A new proof of the four-colour theorem.. Electronic Research Announcements of the American Mathematical Society [electronic only], Tome 02 (1996) pp. 17-25. doi : 10.1090/S1079-6762-96-00003-0. http://gdmltest.u-ga.fr/item/01021588/