ÿþPersonal Page is not available; however, this biographical information: Sverrir joined BT in 1989 and initially worked on the application of dynamical neural networks to speech recognition. Since 1991 he has worked with different units within the Research Department on various modelling aspects of large complex systems. This includes work on the application of game theory and evolutionary principles to the modelling of networks and services. Presently Sverrir heads the Complexity Research Group focusing on performance aspects of peer-to-peer systems, WLANs and ad-hoc networks. More recently Sverrir has worked on the application of risk management techniques to network investment scenarios, including the pricing and trading of bandwidth as commodity. From 1976 to 1983 Sverrir was a Tutor and Research Assistant in theoretical physics at the Institute for Theoretical Physics, University of T?bingen and Institute for Theoretical Physics, University of Karlsruhe, Germany. From 1983 to 1989 he was a Lecturer and Research Fellow in mathematics at the University of London ( King's College ), UMIST, and the University of Southampton. In this time Sverrir worked in various fields of theoretical physics and applied mathematics.? Sverrir Olafsson received MSc degree in mathematical physics from the University of T?bingen in 1978 and a PhD in elementary particle physics from the University of Karlsruhe in 1983. Sverrir has published more than 45 research papers in refereed journals and conferences and more than 350 papers on popular scientific matters in newspapers and magazines. He has also given numerous radio talks and has appeared on a C4 science program.