Šarotar Žižek S, Nedelko Z, Mulej M, Veingerl Čič Ž. Key Performance Indicators and Industry 4.0 – A Socially Responsible Perspective. OE. 2020;66(3):22-35. Accessed July 21, 2026. https://journals.um.si/index.php/oe/article/view/2124