00241nam a2200109Ia 4500008004100000100001800041245002100059260001300080260000900093546001200102999001700114170619s9999    xx            000 0 und d  aRAMASWAMI- R. 0aOPTICAL NETWORKS  bElsevier  c2009  aENGLISH  c18860d18860