ADVANCED ENGINEERING MATERIALS, vol. 11, no. 12, page. 982 - 985, 2009-12
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, vol. 100, no. 12, page. 1715 - 1719, 2009-12
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 23, no. 6-7, page. 1621 - 1626, 2009-03-20