@book{25247,
	author = {Digonnet, Michel J. F., ed.},
	title = {Fiber Laser Sources and Amplifiers IV},
	publisher = {SPIE},
	year = {1993},
	series = {Proceedings of SPIE; V. 1789},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1789}
}