Intelligent platform design of agricultural robot inspired by farmer assistance (AGRIFA). - Young-Jae Ryoo; Ki Nam Lee; Pil-Gong Choi (SCIS&ISIS, 2012)

ZMP based walking pattern generation of child-sized humanoid robot : CHARLES(Cognitive Humanoid Autonomous Robot with Learning and Evolutionary System). - Ki Nam Lee; Young-Jae Ryoo (SCIS&ISIS, 2014)

Walking Pattern Tuning System Based on ZMP for Humanoid Robot. - Ki Nam Lee; Young-Jae Ryoo (Int. J. Humanoid Robotics, 2014)

A fuzzy-PD controller for an autonomous aerial robot. - Do Khac Tiep; Ki Nam Lee; Young-Jae Ryoo; Si Jung Kim (URAI, 2017)

Omni-Directional Walking Pattern Generator for Child-Sized Humanoid Robot, CHARLES2. - Ki Nam Lee; Young-Jae Ryoo; Kyung-Seok Byun; Jaeyoung Choi (Int. J. Humanoid Robotics, 2017)