@inbook{402786,
     title = {P\v redmluva},
     booktitle = {Kurs varia\v cn\'\i ho po\v ctu},
     series = {GDML\_Books},
     publisher = {P\v r\'\i rodov\v edeck\'e vydavatelstv\'\i },
     year = {1952},
     pages = {[3]-[3]},
     url = {http://dml.mathdoc.fr/item/402786}
}