Justin Hensley Anselmo Lastra Montek Singh A Scalable Counterflow-Pipelined Asynchronous Radix-4 Booth Multiplier. 128-137 2005 conf/async/2005 ASYNC http://doi.ieeecomputersociety.org/10.1109/ASYNC.2005.6 db/conf/async/async2005.html#HensleyLS05