@book{38549,
	author = {Letokhov, V. S. and Johansson, S.},
	title = {Astrophysical lasers},
	publisher = {Oxford University Press,},
	year = {2009.},
	address = {Oxford :},
	url = {http://dx.doi.org/10.1093/acprof:oso/9780199548279.001.0001}
}