Barnett Stephen

Dr Stephen M. Barnett, Department of Physics and Applied Physics, University of Strathclyde, John Anderson Building, 107 Rottenrow, Glasgow G4 0NG. Tel: 0141 552 4400 ex. 3457.Dr Paul M. Radmore, Dept. of Electronic & Electrical Engineering, University College, Gower Street, London. Tel: 0171 419 3128. Fax: 0171 380 7306. Email: [email protected]