Usability Test in Different Types of Control-Authority Allocations for Multi-Operator Single-Robot System OCTOPUS. - Chen, Kui; Kamezaki, Mitsuhiro; Katano, Takahiro; Kaneko, Taisei; Azuma, Kohga; Seki, Masatoshi; Ichiryu, Ken; Ishida, Tatsuzo; Sugano, Shigeki (2017)