Eunseuk Oh Hongsik Choi Jong-Seok Kim Double-Link Failure Recovery in WDM Optical Torus Networks. 708-717 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3090&spage=708 2004 conf/icoin/2004 ICOIN db/conf/icoin/icoin2004.html#OhCK04