Sorry for the german text, it was my mistake!
The answer is for Frank only!
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Andreas Schmidt, IPF-Universitaet Karlsruhe, Englerstr. 7, D-7500 Karlsruhe
Telefon: +49 721 608 3676 Fax: +49 721 694568
Internet: schmidt@ipf.bau-verm.uni-karlsruhe.de