1. Auston, D.H. and Nuss, M.C. (1998) IEEE J. of Quant. Electr. 24, 184.
2. Brucherseifer, M., Pellemans, H.P.M., Haring Bolivar, P., Kurz, H. (2000), in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optical Society of America, Washington, USA), pp. 553–554.
3. Brucherseifer, M., Pellemans, H.P.M., Haring Bolivar, P., Kurz, H. (2000b), submitted to Appl. Phys. Lett.
4. Cai, Y., Brener, I., Lopata, A.J., Wynn, J., Pfeiffer, L., Stark, J.B., Wu, Q., Zhang, X.-C., Federici, J.F. (1998) Appl. Phys. Lett. 73, 444.
5. Digby, J.W., Collins, C.E., Towlson, B.M., Karatzas, L.S., Parkhurst, G.M., Chamberlain, J.M., Bowen, J.W., Pollard, R.D., Miles, R.E., Steenson, D.P., Brown, D.A., Cronin, N.J (1997) IEEE MTT-S Int. Micr. Symp. 2, 561.