@inbook{403602,
title = {P\v redmluva},
booktitle = {\'Ulohy o maximech a minimech funkc\'\i },
series = {GDML\_Books},
publisher = {Mlad\'a fronta},
address = {Praha},
year = {1967},
pages = {3-4},
url = {http://dml.mathdoc.fr/item/403602}
}
(éd.). Předmluva, dans Úlohy o maximech a minimech funkcí, GDML_Books, (1967), pp. 3-4. http://gdmltest.u-ga.fr/item/403602/