The authors

michielsen.jpg (23977 bytes) Dr. K. Michielsen
European Marketing and Bussiness Development (EMBD)
Vlasakker 21, B-2160, Wommelgem
Belgium
Tel: +32 (0)473 425 194
e-mail: kristel.michielsenembd.be

raedt.jpg (27883 bytes) Prof. dr. H. De Raedt
Institute for Theoretical Physics and Materials Science Centre
University of Groningen
Nijenborgh 4
NL-9747 AG Groningen
The Netherlands
Tel: +31 (0)50 363 4852
E-mail: h.a.de.raedtrug.nl