Gwiaździńska-Goraj, M. and Jezierska-Thöle, A. 2013. Development models for the service-sector in small cities along the Polish border with Germany and Russia. Acta Universitatis Lodziensis. Folia Geographica Socio-Oeconomica. 15 (Jan. 2013), 39–60. DOI:https://doi.org/10.18778/1508-1117.15.03.