@inbook{403042,
     title = {14. Aritmetick\'a paradoxa a sofismata},
     booktitle = {Aritmetick\'e hry a z\'abavy},
     series = {GDML\_Books},
     publisher = {Jednota \v cesk\'ych matematik\r u a fysik\r u},
     address = {Praha},
     year = {1942},
     pages = {67-[74]},
     url = {http://dml.mathdoc.fr/item/403042}
}