@inbook{400177,
     title = {\v Zivot a v\v edeck\'e snahy Bernarda Bolzana},
     booktitle = {Bolzano a z\'aklady matematick\'e anal\'yzy},
     series = {GDML\_Books},
     publisher = {Jednota \v cs. matematik\r u a fyzik\r u},
     address = {Praha},
     year = {1981},
     pages = {11-[30]},
     url = {http://dml.mathdoc.fr/item/400177}
}

Folta, Jaroslav. Život a vědecké snahy Bernarda Bolzana, dans Bolzano a základy matematické analýzy, GDML_Books,  (1981), pp. 11-[30]. http://gdmltest.u-ga.fr/item/400177/