F. Isada in Y. Isada, „An Empirical Study Regarding Radical Innovation, Research and Development Management, and Leadership“, OE, let. 63, št. 2, str. 22–31, jul. 2017, Pridobljeno: 13. januar 2026. [Na spletu]. Dostopno na: https://old.journals.um.si/index.php/oe/article/view/2208