5th Central European conference in regional science [elektronický zdroj] : conference proceedings, October 5th - 8th, 2014, Košice, Slovak Republic / editors P. Nijkamp ... [et al.] . Košice :  Technical University , 2015 . online (1 226 s) . ISBN 978-80-553-2015-1
http://www3.ekf.tuke.sk/cers/files/zbornik2014/proceedings2014/Proceedings2.htm .