Ir. Hans de Graaff 
Section Mathematical Economics
Phone 043-3883791, room A4.22
Secretariat: phone 043-3883834, room A3.10
E-mail: h.degraaff at ke.unimaas.nl

Department of Quantitative Economics 
Faculty of Economics and Business Administration
University of Maastricht
P.O. Box 616
6200 MD Maastricht
The Netherlands