Bram van Asch
Address:
Department of Mathematics and Computing Science
Eindhoven University of Technology
P.O. Box 513
5600 MB Eindhoven
the Netherlands

office: HG 9.89
phone: +31-40-247 28 10
fax: +31-40-243 58 10
telex: 51163 tuehv nl
e-mail: A.G.v.Asch@tue.nl