W. Miao, F. Agraz, S. Peng, S. Spadaro, G. Bernini, J. Perelló, G. Zervas, R. Nejabati, N. Ciulli, D. Simeonidou, H. Dorren, N. Calabretta, “SDN-enabled OPS with QoS Guarantee for Reconfigurable Virtual Data Center Networks ”, to appear in IEEE/OSA Journal of Optical Communications and Networking, 2015.