1. Schrempp W and Sekimoto T, Unique Word Detection in Digital Burst Communications, Trans Comm Technol, 16, 597–605, 1968
2. The work cited here was jointly performed by S Topliss, previously with Ascom Tech, Berne, Switzerland, now with OPT Ltd., PO Box 53, Coventry, CV3 IHJ, UK, D Beeler, with Ascom Tech, CH-3634, Hombrechtikon, Switzerland and L Altwegg, with Ascom Tech, CH-3018 Berne, Switzerland, private communication
3. Gardener F M, Hangup in phase lock loops, Trans Comm, 25, 1210–14, 1977
4. Ota Y, Swartz R G, Archer V D, et al. High-speed, burst mode, packet-capable optical receiver and instantaneous clock recovery for optical bus operation, J Lightwave Technol, 12, 325–31, 1994
5. Banu M and Dunlop A E, Clock recovery circuits with instantaneous locking. Electron Lett, 28, 2127–30, 1992