Zongli Tang Xingming Li A Mixed Shared and Multi Paths Protection Scheme with SRLG Constraints. 60-65 2007 SNPD (1) http://doi.ieeecomputersociety.org/10.1109/SNPD.2007.43 conf/snpd/2007 db/conf/snpd/snpd2007-1.html#TangL07