@article{Wilkin_Jerzy_Foreword,
 author={Wilkin, Jerzy},
 address={<p>
 Warsaw
 </p>},
 howpublished={online},
 pages={5-7},
 journal={Poland in the European Union: Achievements, Problems & Prospects},
 publisher={Biuro Upowszechniania i Promocji Nauki PAN},
 title={Foreword},
}