@inbook{402723,
title = {Formulace probl\'emu},
booktitle = {\'Uvod do neeukleidovsk\'e geometrie},
series = {GDML\_Books},
publisher = {Jednota \v Ceskoslovensk\'ych matematik\r u a fysik\r u},
address = {Praha},
year = {1926},
pages = {23-[37]},
url = {http://dml.mathdoc.fr/item/402723}
}
(éd.). Formulace problému, dans Úvod do neeukleidovské geometrie, GDML_Books, (1926), pp. 23-[37]. http://gdmltest.u-ga.fr/item/402723/