Service-Oriented Multigranular Optical Network Architecture for Clouds. - Georgios S. Zervas; Valerio Martini; Yixuan Qin; Eduard Escalona; Reza Nejabati; Dimitra Simeonidou; Fabio Baroncelli; Barbara Martini; Karim Torkmen; Piero Castoldi (JOCN, 2010)