-- Christian Perrier Materials Testing Laboratory, Materials Engineering Dpt ONERA, BP72, 92322 Chatillon Cedex FRANCE Voice : +33-1-4673.4563 Fax : +33-1-4673.4142 Home : +33-1-3069.9222 BBS : +33-1-3051.6504 (Fidonet 2:320/213)