TY - JOUR PB - Polish Academy of Sciences – Committee for Spatial Economy and Regional Planning and European Regional Science Association (ERSA) Polish Section L2 - http://journals.pan.pl/Content/98155 PY - 2013 IS - vol. 37 T1 - Introduction UR - http://journals.pan.pl/dlibra/publication/edition/98155 T2 - Studia Regionalia ER -