@article{UM_2020_28_1_a3,
     author = {Nocar, David and Zdr\'ahal, Tom\'a\v{s}},
     title = {Grafy funkc{\'\i}},
     journal = {U\v{c}itel matematiky},
     pages = {26--37},
     year = {2020},
     volume = {28},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_2020_28_1_a3/}
}