@ARTICLE{Knüppel_Michael_Zwei_2018,
 author={Knüppel, Michael},
 volume={vol. LXXI},
 number={No 1},
 pages={126-132},
 journal={Rocznik Orientalistyczny/Yearbook of Oriental Studies},
 howpublished={online},
 year={2018},
 publisher={The Committee of Oriental Studies of the Polish Academy of Sciences and The Publishing House ELIPSA},
 type={Source materials},
 title={Zwei Briefe J.H. (v.) Klaproths an G.H.A. Ewald aus dem Jahre 1831},
 URL={http://www.czasopisma.pan.pl/Content/110686/PDF-MASTER/ROrient%2071%20z.%201-18%207%20KN%C3%9CPPEL.pdf},
}