@article{CMUC_1963__4_3_a7,
     author = {Pultr, Ale\v{s}},
     title = {An analogon of the fixed-point theorem and its application for graphs},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {121--131},
     publisher = {mathdoc},
     volume = {04},
     number = {3},
     year = {1963},
     mrnumber = {0188104},
     zbl = {0151.30902},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1963__4_3_a7/}
}