Step over motion of four wheeled and four legged flexible personal robot. - Noriho Koyachi; Kenichi Maruyama; Yoshihiro Kawai; Fumiaki Tomita; Yasushi Morikawa (ROBIO, 2009)

Preface: Special issue on innovative drone technology. - Kenichi Ohara; Masafumi Miwa; Yasushi Morikawa (Adv. Robotics, 2018)