Variable reduction in MOS timing models. - Charles A. Zukowski; De-Ping Chen (ICCD, 1988)

A bit-slice architecture for sigma-delta analog-to-digital converters. - Vladimir Friedman; Douglas M. Brinthaupt; De-Ping Chen; Timothy W. Deppa; John P. Elward Jr.; Evelyn M. Fields; Hanafy Meleis (IEEE J. Sel. Areas Commun., 1988)

A dual-channel voice-band PCM codec using Sigma Delta modulation technique. - Vladimir Friedman; Douglas M. Brinthaupt; De-Ping Chen; Timothy W. Deppa; John P. Elward Jr.; Evelyn M. Fields; Jeffrey W. Scott; T. R. Viswanathan 001 (IEEE J. Solid State Circuits, 1989)