@inbook{404194,
title = {[Ob\'alka]},
booktitle = {Matematick\'a indukce},
series = {GDML\_Books},
publisher = {Mlad\'a fronta},
address = {Praha},
year = {1963},
pages = {[i]-[ii]},
url = {http://dml.mathdoc.fr/item/404194}
}
(éd.). [Obálka], dans Matematická indukce, GDML_Books, (1963), pp. [i]-[ii]. http://gdmltest.u-ga.fr/item/404194/