- Simone Fischer-Hübner, Costas Lambrinoudakis, Gabriele Kotsis, A Min Tjoa, Ismail Khalil, editors, Trust, Privacy and Security in Digital Business - 18th International Conference, TrustBus 2021, Virtual Event, September 27-30, 2021, Proceedings. Volume 12927 of Lecture Notes in Computer Science, Springer, 2021.