Keiya Sugihara Kenta Amahaya Keita Watanabe Noboru Nakamichi Toshiya Yamada Differences of pointing gestures between a standing posture and a sitting posture. 1-4 2016 GCCE https://doi.org/10.1109/GCCE.2016.7800378 conf/gcce/2016 db/conf/gcce/gcce2016.html#SugiharaAWNY16