@article{ERAAMS_1996_02_1_a2,
     author = {Robertson, Neil and Sanders, Daniel and Seymour, Paul and Thomas, Robin},
     title = {A new proof of the four-colour theorem},
     journal = {Electronic research announcements of the American Mathematical Society},
     pages = {17--25},
     publisher = {mathdoc},
     volume = {02},
     number = {1},
     year = {1996},
     doi = {10.1090/S1079-6762-96-00003-0},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S1079-6762-96-00003-0/}
}