@article{10_37236_924,
     author = {Ant\'onio Breda d'Azevedo and Rui Duarte},
     title = {Bipartite-uniform hypermaps on the sphere},
     journal = {The electronic journal of combinatorics},
     year = {2007},
     volume = {14},
     doi = {10.37236/924},
     zbl = {1115.05021},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/924/}
}