@book{121953,
	author = {Allisy-Roberts, Penelope., and Williams, Jerry.,},
	title = {Farr's physics for medical imaging/},
	publisher = {Saunders/Elsevier, },
	year = {2008.},
	address = {Philadelphia, PA :},
	edition = {Seecond edition.},
	note = {Includes index.}
}