Andrea Carena Valter Ferrero Roberto Gaudino Vito De Feo Fabio Neri Pierluigi Poggiolini Ringo: a Demonstrator of WDM Optical Packet Network on a Ring Topology. 183-197 2002 conf/ondm/2002 ONDM db/conf/ondm/ondm2002.html#CarenaFGFNP02