@misc{Keller_Gottfried_(1819-1890)_Der_[ca,
 author={Keller, Gottfried (1819-1890)},
 address={Stuttgart},
 address={Berlin-Grunewald},
 howpublished={online},
 year={[ca 1904]},
 publisher={J. G. Cotta'sche Buchhandlung Nachfolger},
 publisher={A. S. Klemm},
 language={deu},
 type={tekst},
 title={Der Grüne Heinrich. T. 4},
}