@inbook{400209, title = {24. Exner an Bolzano}, booktitle = {Bernard Bolzano's Schriften}, series = {GDML\_Books}, publisher = {Kr\'alovsk\'a \v cesk\'a spole\v cnost nauk}, address = {Praha}, year = {1935}, pages = {114-116}, url = {http://dml.mathdoc.fr/item/400209} }
Exner, František. 24. Exner an Bolzano, dans Bernard Bolzano's Schriften, GDML_Books, (1935), pp. 114-116. http://gdmltest.u-ga.fr/item/400209/