A. Nolte, and M. Prilla. Collaboration and Technology: 18th International Conference, CRIWG 2012, Raesfeld, Germany, volume 7493 of Lecture Notes in Computer Science, Springer, Heidelberg, (2012)
D. Kirschner, R. Velik, S. Yahyanejad, M. Brandstötter, and M. Hofbaur. Interactive Collaborative Robotics: First International Conference, ICR 2016, Budapest, Hungary, volume 9812 of Lecture Notes in Artificial Intelligence, Springer, Cham, (2016)