@misc{Apianus_Petrus_(1495–1552)_Instrumentum,
 author={Apianus, Petrus (1495–1552)},
 howpublished={online},
 publisher={Petreius Johann},
 language={lat},
 type={inkunabuły},
 title={Instrumentum sinuum, sev primi mobilis, nuper a [...] inventum, nunc [...] ab eodem [...] recognitum et locupletatum [...]. Adiectus est et Quadrans Uniuersalis [...] nova facie [...] fabrefactus [...].},
 keywords={matematyka 16w.},
}