@article{10_4153_CJM_1982_051_4,
     author = {Tutte, W. T.},
     title = {Chromatic {Solutions}},
     journal = {Canadian journal of mathematics},
     pages = {741--758},
     year = {1982},
     volume = {34},
     number = {3},
     doi = {10.4153/CJM-1982-051-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1982-051-4/}
}