Normal-Force Control for an In-Pipe Robot According to the Inclination of Pipelines. - Jungwan Park; Dongjun Hyun; Woong-Hee Cho; Tae-Hyun Kim; Hyunseok Yang (IEEE Trans. Ind. Electron., 2011)

Assisting strategy of walking assistive device on inclined terrain. - Inho Kim; Woong-Hee Cho; Hyunseok Yang (URAI, 2013)