Silva, Agostinho da, Maria Manuel Gil, and Eunice Duartec. “Service Innovation | A Service Blueprinting for Industry4.0”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 52, no. 2 (June 23, 2020): 33–49. Accessed April 30, 2024. https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/11328.