1. CAPANINA Website. September 2006. http://www.capanina.org
2. Integrating users into the wider broadband network via high altitude platforms
3. , , . Stratospheric optical inter-platform links for high altitude platforms. AIAA—Proceedings of the 20th ICSSC, May 2002.
4. , , , . Optical communication from HAPs—overview of the stratospheric optical payload experiment (STROPEX). AIAA—Proceedings of the 22nd ICSSC, May 2004.
5. Performance of coherent optical receivers