@article{10_21136_CPM_1982_118104,
     author = {Zelinka, Bohdan},
     title = {On two problems of the graph theory},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {109--113},
     publisher = {mathdoc},
     volume = {107},
     number = {2},
     year = {1982},
     doi = {10.21136/CPM.1982.118104},
     mrnumber = {659739},
     zbl = {0492.05058},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1982.118104/}
}