@book{36793,
	author = {Gubbins, David. and Herrero-Bervera, Emilio. and SpringerLink (Online service)},
	title = {Encyclopedia of Geomagnetism and Paleomagnetism},
	publisher = {Springer Netherlands,},
	year = {2007.},
	address = {Dordrecht :},
	url = {http://dx.doi.org/10.1007/978-1-4020-4423-6}
}