Fertaľová, Jana, in Pavol Varga. 2007. „Application of the Huff’s Probability Model on Selected Large-Area Retail Units in Košice in the Context of Transformational Changes in Retail After 1989 in Slovakia “. Revija Za Geografijo 2 (2): 63-72. https://doi.org/10.18690/rg.2.2.2911.