TVRDOŇ, Jozef. The regional policy within knowledge economy - theoretical-methodological circumstances. In 3rd Central European Conference in Regional Science : international conference proceedings. - Košice : [Technická univerzita v Košiciach], 2009. ISBN 978-80-553-0329-1, s. 837-847. APVV 0230-07, APVV SK-CZ 0058-07, VEGA 228.