As an appendix i have added a small list of information sources.
Best regards
Anatol Badach
Panagiotis Aivaliotis, Konstantinos Georgoulias, Kosmas Alexopoulos: „Using digital twin for maintenance applications in manufacturing: State of the Art and Gap analysis“; IEEE International Conference on Engineering, Technology and Innovation (ICE/ITMC), Jun 2019, DOI: 10.1109/ICE.2019.8792613
Izabela Rojek, Dariusz Mikołajewski, Ewa Dostatni: Digital Twins in Product Lifecycle for Sustainability in Manufacturing and Maintenance; Applied Sciences, Vol. 11 Issue 1, 2021, DOI: 10.3390/app11010031
https://www.mdpi.com/2076-3417/11/1/31
Giulio Paolo Agnusdei, Valerio Elia, Maria Grazia Gnoni: „Is Digital Twin Technology Supporting Safety Management? A Bibliometric and Systematic Review“; Applied Sciences, Vol. 11, Issue 6, Mar 2021, DOI: 10.3390/app11062767
https://www.mdpi.com/2076-3417/11/6/2767
Uwe V. Riss, Heiko Maus, Sabrina Javaid, Christian Jilek: Digital Twins of an Organization for Enterprise Modeling; IFIP Working Conference on The Practice of Enterprise Modeling; PoEM 2020: The Practice of Enterprise Modeling, Nov 2020, DOI: 10.1007/978-3-030-63479-7_3