Determining optimal warranty periods from the seller's perspective and optimal out-of-warranty replacement age from the buyer's perspective. - Y.-H. Chien (Int. J. Syst. Sci., 2005)

Walker's Buddy: An Ultrasonic Dangerous Terrain Detection System. - Yating Hsu; S.-F. Hsiao; C.-E. Chiang; Y.-H. Chien; Hsueh-Wen Tseng; Ai-Chun Pang; Tei-Wei Kuo; K.-H. Chiang (SMC, 2006)