id: 05511387 dt: j an: 05511387 au: Hehmann, Jörg; Pfeiffer, Thomas ti: New monitoring concepts for optical access networks. so: Bell Labs Tech. J. 13, No. 1, 183-198 (2008). py: 2008 pu: Lucent Technologies, Murray Hill, NJ la: EN cc: ut: ci: li: doi:10.1002/bltj.20290