1. Decreto-Lei n. ̊ 372/2007 de 6 de novembro [Decree-Law no. 372/2007] https://dre.pt/dre/legislacao-consolidada/decreto-lei/2007-34558475 (Port.).
2. Learning factories for future oriented research and education in manufacturing
3. Agrawal S. A. De Smet S. Lacroix and A. Reich. 2020. To Emerge Stronger from the COVID-19 Crisis Companies Should Start Reskilling Their Workforces now. McKinsey Insights. Retrieved from https://www.mckinsey.com/~/media/mckinsey/business%20functions/organization/our%20insights/to%20emerge%20stronger%20from%20the%20covid%2019%20crisis%20companies%20should%20start%20reskilling%20their%20workforces%20now/to-emerge-stronger-from-the-covid-19-crisis.pdf
4. A Guide for the Food Industry to Meet the Future Skills Requirements Emerging with I4.0;Akyazi T.;Foods (basel, Switzerland),2020
5. Assante, D., A. Caforio, M. Flamini, and E. Romano. 2019. “Smart Education in the Context of I4.0.” 2019 IEEE Global Engineering Education Conference (EDUCON) (pp. 1140-1145). IEEE.