Four-axis CAM module for NC machining of rotational-free surfaces. - Suk-Hwan Suh; Kee-Sang Lee (ICRA, 1991)

Solving tool interference problem for four-axis NC machining. - Suk-Hwan Suh; Kee-Sang Lee (ICRA, 1992)

Robust fault detection observer design under fault sensitivity constraints. - Kee-Sang Lee; Tae-Geon Park (J. Frankl. Inst., 2015)