Abderrahmane Kheddar, Eiichi Yoshida, Shuzhi Sam Ge, Kenji Suzuki, John-John Cabibihan, Friederike Eyssel, Hongsheng He: Social Robotics - 9th International Conference, ICSR 2017, Tsukuba, Japan, November 22-24, 2017, Proceedings. Lecture Notes in Computer Science 10652, Springer 2017, ISBN 978-3-319-70021-2