JOURNAL OF THE AMERICAN CERAMIC SOCIETY, vol. 83, no. 7, page. 1699 - 1702, 2000-07
JOURNAL OF MATERIALS RESEARCH, vol. 10, no. 12, page. 3185 - 3193, 1995-12
JOURNAL OF MATERIALS RESEARCH, vol. 10, no. 10, page. 2631 - 2641, 1995-10
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, vol. 78, no. 2, page. 297 - 304, 1995-02