@book{53326,
	author = {Hagen, Wilfred Raymond},
	title = {Biomolecular EPR spectroscopy /},
	publisher = {CRC Press,},
	year = {2009},
	address = {Boca Raton :},
	url = {http://www.loc.gov/catdir/toc/fy0905/2008048857.html}
}