@misc{_Plan_1813,
 editor={Geographisches Institut (Weimar)},
 copyright={Public Domain},
 address={Weimar},
 howpublished={online},
 year={1813},
 publisher={Im Verlage des Geograph. Instituts},
 language={ger},
 title={Plan der Residenz-Stadt Wien und ihrer Vorstädte},
 keywords={street maps, Vienna, Vienna street maps, 19th century},
}