@inbook{402789,
     title = {Zobecn\v en\'\i\ nejjednodu\v s\v s\'\i\ \'ulohy},
     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 = {71-93},
     url = {http://dml.mathdoc.fr/item/402789}
}