@article{10_4153_CJM_1983_023_5,
     author = {Liskovets, V. A. and Walsh, T. R. S.},
     title = {The {Enumeration} of {Non-Isomorphic} {2-Connected} {Planar} {Maps}},
     journal = {Canadian journal of mathematics},
     pages = {417--435},
     year = {1983},
     volume = {35},
     number = {3},
     doi = {10.4153/CJM-1983-023-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1983-023-5/}
}