@misc{Bürgi_Jost_(1552–1632)_Fundamentum,
 author={Bürgi, Jost (1552–1632) and http://viaf.org/viaf/35247721},
 howpublished={online},
 language={ger},
 type={tekst},
 title={Fundamentum Astronomiae},
 keywords={16 w., astronomia, matematyka, trygonometria},
}