@inbook{400122, title = {Worwort der Herausgebers}, 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 = {[III]-[IV]}, url = {http://dml.mathdoc.fr/item/400122} }
Kowalewski, Arnold. Worwort der Herausgebers, dans Bernard Bolzano's Schriften, GDML_Books, (1932), pp. [III]-[IV]. http://gdmltest.u-ga.fr/item/400122/