@misc{Weigt_[Fryderyk,
 author={Weigt},
 howpublished={online},
 title={[Fryderyk Wilhelm IV]},
 keywords={portrait, man, bust, king, german engraving, engraving, Fryderyk Wilhelm IV (1795-1861), 19 w., 19. Jh., 19 century, Weigt},
}