@misc{Hordyński_Piotr_The,
 author={Hordyński, Piotr},
 howpublished={online},
 type={article},
 title={The Collection of Jan Ponętowski. An Introductionto the Description of its Contents},
 keywords={Jan Ponętowski, Hradište, Jagiellonian Library, abbot, collections, donation},
}