Humphreys, D A; Grosche, G*; Eggert, M*; Peterson, J C*; Henningsen, J*; Skipper, B F* (2006) Transmission of active and passive optical reference signals over a 16 channel, 534.4 km WDM optical fibre network. IEE Proc., Optoelectron., 153 (5). pp. 256-261.
Humphreys, D A; Grosche, G*; Petersen, J C*; Henningsen, J*; Eggert, M*; Skipper, B F* (2005) Transmission of active optical reference signals over a 16 channel, 534.4 km WDM optical fibre network. In: OFMC 2005 - 7th Optical Fibre Measurement Conference, 21-23 September 2005, NPL. UK.