@article{10_21136_CMJ_1985_102053,
     author = {Nebesk\'y, Ladislav},
     title = {On 2-cell embeddings of graphs with minimum numbers of regions},
     journal = {Czechoslovak Mathematical Journal},
     pages = {625--631},
     publisher = {mathdoc},
     volume = {35},
     number = {4},
     year = {1985},
     doi = {10.21136/CMJ.1985.102053},
     mrnumber = {809045},
     zbl = {0586.05015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1985.102053/}
}