@misc{Zamenhof_Ludwik_(1859-1917)_Die,
 author={Zamenhof, Ludwik (1859-1917)},
 address={Berlin},
 howpublished={online},
 publisher={Esperanto Verlag Möller & Borel},
 language={ger},
 language={esp},
 title={Die Entstehung der Esperanto-Sprache},
 type={broszura},
}