@article{10_21136_CMJ_1992_128338,
     author = {\v{S}koviera, Martin},
     title = {Spanning subgraphs of embedded graphs},
     journal = {Czechoslovak Mathematical Journal},
     pages = {235--239},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {1992},
     doi = {10.21136/CMJ.1992.128338},
     mrnumber = {1179495},
     zbl = {0778.05032},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1992.128338/}
}