@article{10_21136_CPM_1975_108767,
     author = {Zelinka, Bohdan},
     title = {On {Hadwiger} number of a graph},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {155--159},
     publisher = {mathdoc},
     volume = {100},
     number = {2},
     year = {1975},
     doi = {10.21136/CPM.1975.108767},
     mrnumber = {0396348},
     zbl = {0301.05127},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1975.108767/}
}