@article{10_37236_1654,
     author = {Michael D. Plummer and Xiaoya Zha},
     title = {On the connectivity of graphs embedded in surfaces. {II}},
     journal = {The electronic journal of combinatorics},
     year = {2002},
     volume = {9},
     doi = {10.37236/1654},
     zbl = {1006.05018},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1654/}
}