@book{404099,
title = {Funkcion\'aln\'\i\ rovnice},
series = {GDML\_Books},
publisher = {Mlad\'a fronta},
address = {Praha},
year = {1984},
language = {cs},
url = {http://dml.mathdoc.fr/item/404099}
}
Davidov, Ljubomir. Funkcionální rovnice. GDML_Books (1984), http://gdmltest.u-ga.fr/item/404099/