Some conditions for monotone nondecreasing step response with the fastest rise time. - Byung-Moon Kwon; Hee-Seob Ryu; Oh-Kyu Kwon (ACC, 2001)

Robust H∞ FIR filtering with sampled-data measurements. - Hee-Seob Ryu; Byung-Moon Kwon; Myung-Eui Lee (ACC, 2001)