Kirin, Snežana, Ivana Vučetić, Nena A Vasojević, and Sandra Ž Kirin. 2022. “Lean Tools for Improving the Teaching Process in Serbia - Empirical Research”. Management:Journal of Sustainable Business and Management Solutions in Emerging Economies 27 (1):1-10. https://doi.org/10.7595/management.fon.2020.0013.