Collaboration Technologies and Social Computing: 26th International Conference, CollabTech 2020, Tartu, Estonia, September 8–11, 2020, Proceedings - Nolte; Alvarez, Claudio; Chounta, Irene-Angelica; Hishiyama, Reiko; Inoue, Tomoo; Rodríguez-Triana, María Jesús (Springer International Publishing, 2020)