1. Y Suematsu and A R Adams, Handbook of semiconductor lasers and photonic integrated circuits (Chapman and Hall, New York, 1994) Chap 7
2. G Agrawal, IEEE J. Quantum Electron. 23, 860 (1987)
3. M Yamada and Y Suematsu, J. Appl. Phys. 52, 2653 (1981)
4. M Ahmed and M Yamada, J. Appl. Phys. 84, 3004 (1998)
5. Y Nishimura, K Kobayashi, T Ikegami and Y Suematsu, Nat. Conv. Rec. (1970)