@ARTICLE{Jurkowska_Agata_Porosphaera_2015,
 author={Jurkowska, Agata and Świerczewska-Gładysz, Ewa and Dubicka, Zofia and Olszewska-Nejbert, Danuta},
 volume={vol. 65},
 number={No 1},
 journal={Acta Geologica Polonica},
 howpublished={online},
 year={2015},
 publisher={Komitet Nauk Geologicznych PAN},
 publisher={Wydział Geologii UW},
 title={Porosphaera globularis (Phillips, 1829) (Porifera, Calcarea) in the Campanian (Upper Cretaceous) of extra-Carpathian Poland},
 URL={http://journals.pan.pl/Content/81959/PDF/05_jurkowska.pdf},
 doi={10.1515/agp-2015-0005},
}