@book {Lawson_1988,
	title = {The Physics of the Charged-Particle Beams},
	year = {1988},
	publisher = {Clarendon Press},
	organization = {Clarendon Press},
	edition = {2nd~edition},
	address = {Oxford},
	isbn = {0-19-851719-X},
	author = {J. D. Lawson}
}