@misc{Hauke_Jan_Polycentric_2012,
 author={Hauke, Jan and Churski, Paweł},
 number={vol. 33},
 howpublished={online},
 year={2012},
 publisher={Polish Academy of Sciences – Committee for Spatial Economy and Regional Planning and European Regional Science Association (ERSA) Polish Section},
 title={Polycentric Development and Growth Areas},
}