Modeling a Real-Time Multitasking System in a Timed PQ Net. - Carl K. Chang; Young-Fu Chang; Lin Yang; Ching-Roung Chou; Jong-Jeng Chen (IEEE Softw., 1989)

A real-time distributed simulation of PBX with software reuse. - Carl K. Chang; Young-Fu Chang; Mikio Aoyama (Simul., 1990)