1. Chan, V.W.: Free-space optical communications. J. Lightwave Technol. 24(12), 4750–4762 (2006)
2. Hochfelder, D.: Alexander graham bell. Encylopedia Britannica (2015)
3. Kaushal, H., and Georges K.: Free space optical communication: challenges and mitigation techniques (2015).
arXiv:1506.04836
4. Perlot, N., Daniel, F.: Aperture averaging: theory and measurements. Free-Space Laser Communication Technologies XVI. Int. Soc. Opt. Photon. 5338, 233–243 (2004)
5. Yura, H.T., and McKinley, W.G.: Aperture averaging of scintillation for space-to-ground optical communication applications. Appl. Optics 22(11), 1608–1609 (1983)