@book{27292,
	author = {Epstein, Richard, ed.},
	title = {Laser Refrigeration of Solids II},
	publisher = {SPIE},
	year = {2009},
	series = {Proceedings of SPIE; V. 7228},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/7228}
}