Address of the author
Address of the author
Harald Fripertinger
Institut für Mathematik der
Karl-Franzens-Universität Graz
Heinrichstr. 36
A-8010 Graz
e-mail:
harald.fripertinger@kfunigraz.ac.at
harald.fripertinger@kfunigraz.ac.at,
last changed: January 23, 2001
Address of the author
