- Davinia Hernández Leo, Reiko Hishiyama, Gustavo Zurita, Benjamin Weyers, Alexander Nolte, Hiroaki Ogata, editors, Collaboration Technologies and Social Computing - 27th International Conference, CollabTech 2021, Virtual Event, August 31 - September 3, 2021, Proceedings. Volume 12856 of Lecture Notes in Computer Science, Springer, 2021.