Comments on "Compatible High-Density Bipolar Codes: An Unrestricted Transmission Plan for PCM Carriers". - Virgil I. Johannes (IEEE Trans. Commun., 1972)

Determining Repeater Margin with a Stub and Attenuator. - Virgil I. Johannes; G. J. Stiles (IEEE Trans. Commun., 1975)

A 44.736 Mbits/s Codec for U600 Mastergroups. - Howard W. Andrews; Virgil I. Johannes; W. Earl Woodzell (IEEE Trans. Commun., 1977)

Indicating Service Outages of High Capacity Digital Systems at the Affected Channel Banks. - W. Bleickardt; Virgil I. Johannes; W. Earl Woodzell (IEEE Trans. Commun., 1979)

Introduction. - David A. Hodges; Virgil I. Johannes (IEEE Trans. Commun., 1979)

Improving on bit error rate. - Virgil I. Johannes (IEEE Commun. Mag., 1984)