Christophe Giraud Erik Woodward Knudsen Fault Attacks on Signature Schemes. 478-491 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3108&spage=478 2004 conf/acisp/2004 ACISP db/conf/acisp/acisp2004.html#GiraudK04