KEY ENGINEERING MATERIALS, vol. 270-273, page. 221 - 226, 2004-01
KEY ENGINEERING MATERIALS, vol. 261-263, page. 1109 - 1114, 2004-01
KEY ENGINEERING MATERIALS, vol. 270-273, page. 996 - 1001, 2004-01
KEY ENGINEERING MATERIALS, vol. 270-273, page. 2315 - 2320, 2004-01