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Maybe you had stored this link as a bookmark, or you were refered to here by some other site: we renewed all our pages in 2006, thus older links will be outdated and wrong. Please try to locate what you are looking for using the menu of this page.

If the above does not apply, and you have the time and leasure, please mail the following information to the webmaintainer:
robert.frank@unibas.ch

The pipe broke when trying to access the following URL:

And please add the URL from which this page was called.