Affiliation: | 1. Department of Computing, University of Lancaster, Bailrigg, Lancaster LA1 4YR, U.K.;2. Department of Computing Science, University of Glasgow, Glasgow G12 8QQ, U.K.;3. Software Sciences Ltd., Deanway Technology Centre, Wilmslow Road, Handforth, Wilmslow, Cheshire SK9 3ET, U.K.;4. CAP Group Ltd., 40-44 Coombe Road, New Malden, Surrey KT3 4QF, U.K. |