The following publications are possibly variants of this publication:
- Optimizing an array of antennas for cellular coverage from a high altitude platformJohn Thornton, David Grace, Myles H. Capstick, Tim C. Tozer. TWC, 2(3):484-492, 2003. [doi]
- Improving the system capacity of broadband services using multiple high-altitude platformsD. Grace, J. Thornton, Guanhua Chen, G. P. White, T. C. Tozer. TWC, 4(2):700-709, 2005. [doi]
- Performance of Multiple High Altitude Platforms using Directive HAP and User AntennasGuanhua Chen, David Grace, Tim C. Tozer. wpc, 32(3-4):275-299, 2005. [doi]