Secretary of the LNMB
Ms. J. Aanhaanen
Mathematical Institute
Leiden University
P.O.Box 9512, 2300 RA Leiden
The Netherlands
Tel: +31 71 - 5277129 / +31 71 - 5277130
Fax: +31 71 - 5277101
E-mail :
lnmb@math.leidenuniv.nl