@misc{_[Pfeiffer,
 howpublished={online},
 language={ger},
 language={lat},
 title={[Pfeiffer Christoph]},
 keywords={portrait, man, bust, theologian, poet, German graphics, engraving, Pfeiffer Christoph (1689-1758), 18 w., 18. Jh., 18 century},
}