Ligetvári, Éva. “Project Portfolio Management: A Pilot Survey on the Importance of ‘Project Building Stones’ in Corporate Life”. Theory, Methodology, Practice – Review of Business and Management 9, no. 01 (January 15, 2013): 57–62. Accessed November 22, 2024. https://ojs.uni-miskolc.hu/index.php/tmp/article/view/1444.