@inbook{402996,
title = {P\v redmluva},
booktitle = {Spojnicov\'e nomogramy},
series = {GDML\_Books},
publisher = {Jednota \v cesk\'ych matematik\r u a fysik\r u},
address = {Praha},
year = {1941},
pages = {3-[6]},
url = {http://dml.mathdoc.fr/item/402996}
}
(éd.). Předmluva, dans Spojnicové nomogramy, GDML_Books, (1941), pp. 3-[6]. http://gdmltest.u-ga.fr/item/402996/