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1999PhDT........11P Author Comment Author comment for 1999PhDT........11P:

The full text of this article is available from the author's home institution at the URL: http://www.ira.bo.cnr.it/~torres/thesis/thesis.html

Author comment submitted 20-Jun-2001 by Miguel-Angel Perez-Torres (torres@ira.bo.cnr.it)