Fertaľová J., and Varga P. “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 ”. Journal for Geography, Vol. 2, no. 2, Dec. 2007, pp. 63-72, doi:10.18690/rg.2.2.2911.