@misc{Gemma_Frisius_Reiner_(1508-1555)_Arithmeticae_1568,
 author={Gemma Frisius, Reiner (1508-1555)},
 title={Arithmeticae Practicae Methodvs Facilis Per Gemmam Frisivm [...]},
 address={Lipsiae},
 year={1568},
 language={lat},
 type={starodruk},
 publisher={Iohannes Rhamba excudebat},
 keywords={Stare druki},
}