1. Yokoyama, H., Ujihara, K. (eds.): Spontaneous Emission and Laser Oscillation in Microcavities. CRC Press, New York (1995)
2. Dalibard, J., Dupont-Roc, J., Cohen-Tannoudji, C.: Vacuum fluctuations and radiation reaction: identification of their respective contributions. J. Phys. 43, 1617 (1982)
3. Stern, F., Woodall, J.M.: Photon recycling in semiconductor lasers. J. Appl. Phys. 45, 3904 (1974)
4. Numai, T., Kosaka, H., Ogura, I., et al.: Indistinct threshold laser operation in a pnpn vertical to surface transmission electro-photonic device with a vertical cavity. IEEE J. Quantum Electron. 29, 403 (1993)
5. Numai, T., Kurihara, K., Ogura, I., et al.: Effect of sidewall reflector on current versus light-output in a pnpn vertical to surface transmission electro-photonic device with a vertical cavity. IEEE J. Quantum Electron. 29, 2006 (1993)