@article{1183414940, author = {Maddison, Isabel}, title = {Note on the history of the map-coloring problem}, journal = {Bull. Amer. Math. Soc.}, volume = {4}, number = {3}, year = {1897}, language = {en}, url = {http://dml.mathdoc.fr/item/1183414940} }
Maddison, Isabel. Note on the history of the map-coloring problem. Bull. Amer. Math. Soc., Tome 4 (1897) no. 3, . http://gdmltest.u-ga.fr/item/1183414940/