JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 278, no. 39816, page. 137 - 144, 2000-12
CHEMICAL PHYSICS LETTERS, vol. 329, no. 5-6, page. 370 - 376, 2000-10-27
JOURNAL OF APPLIED PHYSICS, vol. 88, no. 7, page. 3832 - 3839, 2000-10-01
JOURNAL OF MATERIALS RESEARCH, vol. 15, no. 2, page. 278 - 281, 2000-02