Mielecka-Kubień, Zofia, and Katarzyna Warzecha. 2015. “The Socio-Demographic Situation of Chosen Cities in Śląskie Province in the Years 2002 and 2009”. Krakow Review of Economics and Management Zeszyty Naukowe Uniwersytetu Ekonomicznego W Krakowie, no. 923 (December): 5-21. https://doi.org/10.15678/ZNUEK.2013.0923.01.