@inbook{400227,
title = {Bernard Bolzano's Schriften [Titelbl\"atter]},
booktitle = {Bernard Bolzano's Schriften},
series = {GDML\_Books},
publisher = {Kr\'alovsk\'a \v cesk\'a spole\v cnost nauk v Praze},
address = {Praha},
year = {1948},
pages = {[1a]-[1e]},
url = {http://dml.mathdoc.fr/item/400227}
}
Bolzano, Bernard. Bernard Bolzano's Schriften [Titelblätter], dans Bernard Bolzano's Schriften, GDML_Books, (1948), pp. [1a]-[1e]. http://gdmltest.u-ga.fr/item/400227/