@ARTICLE{Klasik_Andrzej_Key_2017, author={Klasik, Andrzej and Muster, Rafał}, number={vol. 51}, journal={Studia Regionalia}, pages={5-6}, howpublished={online}, year={2017}, publisher={Polish Academy of Sciences – Committee for Spatial Economy and Regional Planning and European Regional Science Association (ERSA) Polish Section}, type={Wprowadzenie / Introduction}, title={Key concepts creating modern cities – Introduction}, URL={http://www.czasopisma.pan.pl/Content/103081/PDF-MASTER/SR_51_intro.pdf}, }