Metal surface inspection using image processing techniques. - Hon-Son Don; King-Sun Fu; C. R. Liu; Wei-Chung Lin (IEEE Trans. Syst. Man Cybern., 1984)

Automated process planning and expert systems. - M. C. Wu; C. R. Liu (ICRA, 1985)

Review of dimensioning and tolerancing: representation and processing. - Utpal Roy; C. R. Liu; T. C. Woo (Comput. Aided Des., 1991)

Analysis on machined feature recognition techniques based on B-rep. - M. C. Wu; C. R. Liu (Comput. Aided Des., 1996)