The 4th International Conference on Nitride Semiconductors (ICNS 4), page. 48, 2001-07-16
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, vol. 228, no. 2, page. 621 - 624, 2001-11
2000 Materials Research Society (MRS) Fall meeting, page. 149, 2000-11-27
2000 Materials Research Society (MRS) Fall meeting, page. 179, 2000-11-27