@book{25520,
	author = {Begley, David, ed.},
	title = {Free-Space Laser Communication Technologies III},
	publisher = {SPIE},
	year = {1991},
	series = {Proceedings of SPIE; V. 1417},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1417}
}