Masashi Imai Metehan Özcan Takashi Nanya Evaluation of Delay Variation in Asynchronous Circuits Based on the Scalable-Delay-Insensitive Model. 62-71 2004 conf/async/2004 ASYNC http://csdl.computer.org/comp/proceedings/async/2004/2133/00/21330062abs.htm db/conf/async/async2004.html#ImaiON04