Hiroshi Matsuura Naotaka Morita Tatsuro Murakami Kazumasa Takami Disjointed SRLG Routing for GMPLS Networks by Hierarchically Distributed PCE. 51-62 2007 90-B IEICE Transactions 1 http://dx.doi.org/10.1093/ietcom/e90-b.1.51 db/journals/ieicet/ieicet90b.html#MatsuuraMMT07a