@inbook{402949,
title = {P\v redmluva},
booktitle = {O rovnic\'\i ch},
series = {GDML\_Books},
publisher = {Jednota \v cesk\'ych matematik\r u a fysik\r u v Praze},
address = {Praha},
year = {1940},
pages = {3-[4]},
url = {http://dml.mathdoc.fr/item/402949}
}
(éd.). Předmluva, dans O rovnicích, GDML_Books, (1940), pp. 3-[4]. http://gdmltest.u-ga.fr/item/402949/