Jorge Juan-Chico Manuel J. Bellido Paulino Ruiz-de-Clavijo Antonio J. Acosta Manuel Valencia Degradation Delay Model Extension to CMOS Gates. 149-158 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=1918&spage=0149 2000 conf/patmos/2000 PATMOS db/conf/patmos/patmos2000.html#Juan-ChicoBRAV00