@article{10_4153_CJM_1981_078_2,
     author = {Cori, Robert and Vauquelin, Bernard},
     title = {Planar {Maps} are {Well} {Labeled} {Trees}},
     journal = {Canadian journal of mathematics},
     pages = {1023--1042},
     year = {1981},
     volume = {33},
     number = {5},
     doi = {10.4153/CJM-1981-078-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-078-2/}
}