@TECHREPORT\{IMM1992-04565, author = "J. Spars{\o} and J. Staunstrup", title = "Design and Performance Analysis of Delay-Insensitive Multi-Ring Structures", year = "1992", month = "dec", pages = "1-25", number = "", series = "", institution = "Department of Computer Science, Technical University of Denmark", address = "", type = "", url = "http://www2.compute.dtu.dk/pubdb/pubs/4565-full.html" }