I. Vrečko in M. Mulej, „Mastering Systems Strategic Crises to Prevent Business Crises“, OE, let. 58, št. 5-6, str. 3–13, avg. 2012, Pridobljeno: jul. 21, 2026. Dostopno na: https://journals.um.si/index.php/oe/article/view/2320