@article{PMFA_2015_60_4_a6,
     author = {Strouhal, \v{C}en\v{e}k},
     title = {Mosaika {XVIII}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {348--354},
     year = {2015},
     volume = {60},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_2015_60_4_a6/}
}