@ARTICLE{Ziobrowski_Zygmunt_The_2002,
 author={Ziobrowski, Zygmunt},
 number={No 201},
 pages={13-21},
 journal={Biuletyn KPZK},
 howpublished={online},
 year={2002},
 publisher={PAN, Komitet Przestrzennego Zagospodarowania Kraju},
 title={The influence of external urban centres on the competitiveness of Polish space},
 type={article},
 URL={http://journals.pan.pl/Content/135849/PDF-MASTER/4_201_2002_ZIOBROWSKI_Influence.pdf},
}