1. D. Grace, N.E. Daly, T.C. Tozer, A.G. Burr, and D.A.J. Pearce, “Providing Multimedia Communications from High Altitude Platforms”, International Journal of Satellite Communications, Vol. 19, pp. 559–580, November, 2001.
2. T. Konefal, C. Spillard, and D. Grace, “Site diversity for High Altitude Platforms: A Method for the Prediction of Joint Site Attenuation Statistics”, IEE Proceedings of Ant and Prop, April, 2002.
3. C.L. Spillard, D. Grace, J. Thornton and T.C. Tozer, “Effect of Ground Station Antenna Beamwidth on Rain Scatter Interference in High-Altitude Platform links”, Electronics Letters, Vol. 38, No. 2, pp. 1211–1213, 26th September, 2002.
4. T.C. Tozer and D. Grace, “High-Altitude Platforms for Wireless Communications”, IEE Electronics and Communications Engineering Journal, pp. 127–137, June, 2001.
5. R. Miura and M. Oodo, “Wireless Communications System Using Stratospheric Platforms”, Journal of the Communication Research Laboratory, Vol. 48, No. 4, pp. 33–48, 2001.