@inbook{400220,
     title = {Anmerkungen des 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 = {1948},
     pages = {185-207},
     url = {http://dml.mathdoc.fr/item/400220}
}