@book{404109,
title = {Faktori\'aly a kombina\v cn\'\i\ \v c\'\i sla},
series = {GDML\_Books},
publisher = {Mlad\'a fronta},
address = {Praha},
year = {1985},
language = {cs},
url = {http://dml.mathdoc.fr/item/404109}
}
Sedláček, Jiří. Faktoriály a kombinační čísla. GDML_Books (1985), http://gdmltest.u-ga.fr/item/404109/