30th International Conference on Organization and Technology of Maintenance (OTO 2021) Proceedings of 30th International Conference on Organization and Technology of Maintenance (OTO 2021) - Glavaš, Hrvoje; Hadzima-Nyarko, Marijana; Karakašić, Mirko; Ademović, Naida; Avdaković, Samir (Springer International Publishing, 2022)