Paris Charalampou Anastasios Zafeiropoulos Constantinos Vassilakis Chrysostomos Tziouvaras Vasiliki Giannikopoulou Nikolaos Laoutaris Empirical evaluation of energy saving margins in backbone networks. 1-6 2013 LANMAN https://doi.org/10.1109/LANMAN.2013.6528275 conf/lanman/2013 db/conf/lanman/lanman2013.html#CharalampouZVTG13