Canhui Ou Biswanath Mukherjee Differentiated Quality-of-Protection Provisioning in Optical/MPLS Networks. 650-661 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3042&spage=650 2004 conf/networking/2004 NETWORKING db/conf/networking/networking2004.html#OuM04