@misc{Welin_Schneekoppengipfel,
 author={Welin},
 address={Oldenburg in Holstein},
 howpublished={online},
 publisher={Kunstverlagsanstalt Julius Simonsen},
 language={ger},
 title={Schneekoppengipfel im Winter},
 keywords={grafika niemiecka, akwaforta, Karkonosze, widoki, Śnieżka (góra)},
}