1. R.L. Ross, S.P. Svensson, P. Lugli, Pseudomorphic HEMT Technology and Applications NATO ASI Series E, Vol. 309, Kluwer, Dordrecht, 1996.
2. 1997 IEEE MTT-S International Microwave Symposium Digest;Kunii,1997
3. A. Inoue, A. Ohta, T. Nakamoto, S. Kageyama, T. Kitano, K. Sato, IEICE Trans. Electron., 1999, in press.
4. 1999 Emerging Technologies Symposium;Ishikawa,1999