@book{39921,
	author = {Cember, Herman. and Johnson, Thomas E.},
	title = {Introduction to health physics /},
	publisher = {McGraw-Hill Medical,},
	year = {c2009.},
	address = {New York :},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0804/2007042919-b.html}
}