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Author comment for 2002PhDT.........3W:

Electronic copies of this thesis may be obtained from the author's home instition at the URL http://webdoc.sub.gwdg.de/diss/2002/weilbacher/index.html


Author comment submitted on 8 April, 2003 by Peter Weilbacher (P.M.Weilbacher@durham.ac.uk)