@book{25245,
	author = {Digonnet, Michel J. F., ed.},
	title = {Fiber Laser Sources and Amplifiers II},
	publisher = {SPIE},
	year = {1991},
	series = {Proceedings of SPIE; V. 1373},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1373}
}