@book{31920,
	author = {Derbov, Vladimir, ed.},
	title = {Saratov Fall Meeting '99: Laser Physics and Spectroscopy},
	publisher = {SPIE},
	year = {2000},
	series = {Proceedings of SPIE; V. 4002},
	address = {Washington, USA},
	url = {https://www.spiedigitallibrary.org/conference-proceedings-of-spie/4002}
}