@book{402733,
title = {\'Uvod do neeukleidovsk\'e geometrie},
series = {GDML\_Books},
publisher = {Jednota \v Ceskoslovensk\'ych matematik\r u a fysik\r u},
address = {Praha},
year = {1926},
language = {cs},
url = {http://dml.mathdoc.fr/item/402733}
}
Hlavatý, Václav. Úvod do neeukleidovské geometrie. GDML_Books (1926), http://gdmltest.u-ga.fr/item/402733/