[1] SkyStation www.skystation.com, August 2005
[2] S.Karapantazis and F.-N. Pavlidon, "Broadband communications VIA high altitude platforms: ASURVEY", IEEE communications surveys& Tutorials, first Quarter 2005, pp. 1-31, 2005.
[3] Airship Technologies Group, www.atgplc.com, August 2005
[4] Alejandro Aragon-Zavala, Jose Luiscuevas-Ruiz and Jose Antonio Delagado-penin”High Altitude Platforms for wireless communications”, Wiley&Sons, 2008.
[5] Basher EL-Jabu and Raymond Stele, "Cellular communication using Aerial platforms", IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL.50, NO.3, MAY 2001.
[6] Moadmad Dessowky , Hamdy Sharshar and Yasser ALbagory , "Footprint Analysis for HAPS cellular communication", China-Japan joint Microwave conference(CJMW2006),August23-25,2006, Chengdu, China.
[7] Basher EL-Jabu and Raymond Stele, "Effect of positional in stability of an Aerial platform on its CDMA performance", in proc. IEEE Vehicular Technology Conf., vol.5, Sept. 1999, pp. 2471-2475.
[8] M. Dessouky, H. Sharshar, Y. Albagory, "Design of High Altitude Platforms Cellular Communications", Progress In Electromagnetic Research, PIER 67, pp. 251-261, 2007.
[9] M. Dessouky, H. Sharshar, Y. Albagory, "Geometrical Analysis of High Altitude Platforms Cellular Footprint", Progress In Electromagnetics Research, PIER 67, pp. 263-274, 2007.
[10] Bashir El-Jabu, Raymond Steele, Fellow, "aerial platforms: A promising means of 3G communications" IEEE Vehicular Technology Conference 49, May 1999.
[11] Marina Mondin, Fabio Dovis, and Paolo Mulassando, "on the use of HALE platform as GSM base stations," IEEE personal communications, April 2001.
[12] Occasional Papers, http://www.amacad.org 2008.
[13] AeroVironment, www.aerovironment.com, October 2007.
[14] Lindstrand Balloons Ltd, www.lindstrand.co.uk, August 2007.