A visualisation approach to learning the concept of recursion. - Jihn-Chang J. Jehng; Sho-Huan Simon Tung; Ching-Tao Chang (J. Comput. Assist. Learn., 1999)

Visual representations for recursion. - Sho-Huan Tung; Ching-Tao Chang; Wing-Kwong Wong; Jihn-Chang J. Jehng (Int. J. Hum. Comput. Stud., 2001)

A Survey of Distance Education Challenges and Technologies. - Timothy K. Shih; Giani D. Antoni; Timothy Arndt; Asirvatham Asirvatham; Ching-Tao Chang; Yam San Chee; Chyi-Ren Dow; Jason C. Hung; Qun Jin; Insung Jung; Hong V. Leong; Sheng-Tun Li; et al. (Int. J. Distance Educ. Technol., 2003)