A multi-area MPLS/GMPLS interoperability trial over ROADM/OXC network. - Wataru Imajuku; Eiji Oki; Rajiv Papneja; Shinichiro Morishita; Kenichi Ogaki; Masanori Miyazawa; Keiji Miyazaki; Hiroaki Nakazato; Hidetsugu Sugiyama; John Allen; Shinichi Hasegawa; Nobuhiro Sakuraba; et al. (IEEE Commun. Mag., 2009)