S. Šarotar Žižek, Z. Nedelko, M. Mulej, in Ž. Veingerl Čič, „Key Performance Indicators and Industry 4.0 – A Socially Responsible Perspective“, OE, let. 66, št. 3, str. 22–35, jul. 2020, Pridobljeno: jul. 21, 2026. Dostopno na: https://journals.um.si/index.php/oe/article/view/2124