@article{UM_2011_19_1_a1,
     author = {Ko\v{c}andrlov\'a, Milada},
     title = {Apolloniovy kru\v{z}nice},
     journal = {U\v{c}itel matematiky},
     pages = {3--8},
     year = {2011},
     volume = {19},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/UM_2011_19_1_a1/}
}