@misc{Sturm_Johann_(1507-1589)_Libri_1550,
 author={Sturm, Johann (1507-1589)},
 title={Libri Dvo Ioannis Stvrmii de Periodis Vnvs},
 address={Argentorati},
 year={1550},
 language={lat},
 language={grc},
 type={starodruk},
 publisher={Vuendelinus Rihelius},
}