@misc{Brückner_Aleksander_(1856–1939)_Piast_1907,
 author={Brückner, Aleksander (1856–1939)},
 copyright={Public Domain},
 howpublished={online},
 year={1907},
 language={pol},
 title={Piast},
 type={Text},
 URL={http://www.rcin.org.pl/iae/Content/4802/PDF/WA308_14572_B5536_PIAST_I.pdf},
 keywords={Polish anthroponymy, etymology of the name "Piast"},
}