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: jul. 21, 2026. Dostopno na: https://journals.um.si/index.php/oe/article/view/2208