@misc{Poniatowski_Stanisław_(1884-1945)_Origins,
 author={Poniatowski, Stanisław (1884-1945)},
 copyright={Copyright by Polskie Towarzystwo Ludoznawcze},
 howpublished={online},
 language={pol},
 type={text},
 title={Origins of four-cornered cap},
 keywords={four-cornered cap, capital punishment, cap Siberia, cap Europe},
}