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)