@misc{Opitz_Martin_(1597–1639)_Martini,
 author={Opitz, Martin (1597–1639)},
 howpublished={online},
 language={ger},
 title={Martini Opitii Lob deß Feldtlebens.},
 type={text},
 keywords={oprawa pergaminowa, nuty (oprawa)},
}