Woojae Lee Taehyun Kim Jeongeun Kim TaeWon Seo Differential-Driven Wheeled Mobile Robot Mechanism With High Step-Climbing Ability. 2702-2709 2025 March 10 IEEE Robotics Autom. Lett. 3 https://doi.org/10.1109/LRA.2025.3534681 db/journals/ral/ral10.html#LeeKKS25 streams/journals/ral