@misc{Gieysztor_Aleksander_(1916–1999)_Recherches_1961,
 author={Gieysztor, Aleksander (1916–1999)},
 volume={4},
 editor={Institute of History of the Polish Academy of Sciences},
 copyright={Rights Reserved - Free Access},
 journal={Acta Poloniae Historica},
 address={Wrocław},
 howpublished={online},
 year={1961},
 publisher={Zakład Narodowy im. Ossolińskich},
 language={fre},
 title={Recherches sur les fondements de la Pologne médiévale: état actuel des problèmes},
 type={Text},
 URL={http://rcin.org.pl/Content/8524/PDF/WA303_23135_1961-04_APH-01_o.pdf},
 keywords={Poland, Middle Ages, historiography},
}