@misc{Wilkin_(ed._by)_Jerzy_Supplement,
 author={Wilkin (ed. by), Jerzy},
 pages={93 s.},
 address={Warsaw},
 journal={Poland in the European Union: Achievements, Problems & Prospects},
 howpublished={online},
 publisher={Biuro Upowszechniania i Promocji Nauki PAN},
 title={Supplement},
 URL={http://publikacje.pan.pl/Content/115428/PDF-MASTER/Strony%20od%20Raport_Wilkin_Supplement.pdf},
}