Jiro Shimaya Yuichiro Yoshikawa Oskar Palinko Kohei Ogawa Nobuhiro Jinnai Hiroshi Ishiguro Active Participation in Lectures via a Collaboratively Controlled Robot. 587-598 2021 13 Int. J. Soc. Robotics 4 https://doi.org/10.1007/s12369-020-00651-y db/journals/ijsr/ijsr13.html#ShimayaYPOJI21