The Design of Multiple-Valued Asynchronous Sequential Circuits - Steve Sheafor (1974)

DVSR: a high-performance metro ring protocol. - Laura Balzano; Violeta Gambiroza; Yonghe Liu; Ping Yuan; Edward W. Knightly; Steve Sheafor (Comput. Commun. Rev., 2002)

Design, analysis, and implementation of DVSR: a fair high-performance protocol for packet rings. - Violeta Gambiroza; Ping Yuan; Laura Balzano; Yonghe Liu; Steve Sheafor; Edward W. Knightly (IEEE/ACM Trans. Netw., 2004)