Proposed Industry 4.0 Maintenance framework for critical and demanding infrastructures and processes. - Vasileios Karaiskos; Nikolaos Zinas; Theodosios Gkamas; Ion Anastasios Karolos; Christos Pikridas; Nikolaos Vrettos; Vasileios Tsioukas; Sotirios Kontogiannis (SEEDA-CECNSM, 2022)