Proposed presence system for safety confirmation. - Hiroaki Nishihata; Masahiro Otsuka; Koichi Asatani; Osamu Mizuno; Haruno Kataoka; Michio Shimomura (ICIN, 2012)

Development of an air-ground operational robot and its fundamental controlling approach. - Masahiro Ootsuka; Chinthaka Premachandra; Kiyotaka Kato (SCIS&ISIS, 2014)

A study on development of a hybrid aerial / terrestrial robot system for avoiding ground obstacles by flight. - Chinthaka Premachandra; Masahiro Otsuka; Ryo Gohara; Takao Ninomiya; Kiyotaka Kato (IEEE CAA J. Autom. Sinica, 2019)