Fülöp, G., L. . Hernádi, and I. Perge. “Enterprises in Hungary from a Global Perspective - The Examination of Strategical Possibilities and Threats”. Theory, Methodology, Practice – Review of Business and Management, vol. 3, no. 01, Feb. 2005, pp. 23-29, https://ojs.uni-miskolc.hu/index.php/tmp/article/view/1321.