@inbook{400104, 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 = {1932}, pages = {[Ia]-[II]}, url = {http://dml.mathdoc.fr/item/400104} }
(éd.). Bernard Bolzano's Schriften [Titelblätter], dans Bernard Bolzano's Schriften, GDML_Books, (1932), pp. [Ia]-[II]. http://gdmltest.u-ga.fr/item/400104/