Corresponding Author

Paper:	idn629
Name:	J. Pitkänen
Company:	VTT Manufacturing Technology
Address:	P.O. Box 1704 FIN-02044 VTT
Country:	Finland
Phone:	00358 9 4565887
Fax:	00358 9 456 7002
Email:	jorma.pitkanen@vtt.fi