I. Chen Mabo Robert Ito A Study of Unreserved Backup Paths for Reliable QoS under Single Link Failure. 459-464 2008 ICCCN http://dx.doi.org/10.1109/ICCCN.2008.ECP.95 conf/icccn/2008 db/conf/icccn/icccn2008.html#ChenI08