Meeyoung Cha Wanpracha Art Chaovalitwongse Zhe Liang Jennifer Yates Aman Shaikh Sue B. Moon Integer Linear Programs for Routing and Protection Problems in Optical Networks. 1610-1617 2009 Encyclopedia of Optimization http://dx.doi.org/10.1007/978-0-387-74759-0_283 reference/opt/2009 db/reference/opt/opt2009.html#ChaCLYSM09