@misc{Boethius_Anicius_Manlius_Torquatus_Severinus_(c._475_–_524)_De,
 author={Boethius, Anicius Manlius Torquatus Severinus (c. 475 – 524) and http://viaf.org/viaf/100218964 and Frutolfus Bambergensis ( –1103) and http://viaf.org/viaf/14899082},
 howpublished={online},
 language={lat},
 type={tekst},
 title={De institutione arithmetica},
 title={Rythmimachia},
 keywords={11 w., 12 w., historia matematyki},
}