@misc{Poniatowski_Stanisław_(1884-1945)_Letter,
 author={Poniatowski, Stanisław (1884-1945)},
 howpublished={online},
 language={pol},
 type={text},
 title={Letter of Stanislaw Poniatowski to Prof. Vladimir Tkalcic, 30.11.1931},
 keywords={Poniatowski, Stanisław (1884-1945), Tkalcic, Vladimir, letter},
}