A robust optimization approach for energy-aware routing in MPLS networks - Addis, Bernardetta; Capone, Antonio; Carello, Giuliana; Gianoli, Luca G.; Sansò, Brunilde (Proc. of ICNC-13, International Conference on Computing, Networking and Communications, Green Computing, Networking and Communications Symposium, 28-31 January, San Diego, USA, 2013)