?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Taylor&rft.aufirst=Michael+George&rft.au=Taylor%2C+Michael+George&rft.degree=Doctoral&rft.inst=UCL+(University+College+London)&rft.tpages=109&rft.title=Devices+and+networks+for+optical+switching&rft.date=1991