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Key Engineering Materials Vols. 361-363 (2008) pp 467-470
online at http://www.scientific.net
© (2008) Trans Tech Publications, Switzerland
Online available since 2007/Nov/20
All rights reserved. No part of contents of this paper may be reproduced or transmitted in any form or by any means without the written permission of the
publisher: Trans Tech Publications Ltd, Switzerland, www.ttp.net. (ID: 200.20.123.106-02/03/09,12:27:43)