Strelcova, Stanislava, David Rehak, and David E. A. Johnson. “Influence of Critical Infrastructure on Enterprise Economic Security”. Communications - Scientific letters of the University of Zilina 17, no. 1 (February 28, 2015): 105-110. Accessed April 6, 2026. http://journals.uniza.sk/index.php/communications/article/view/401.