@book{41500,
	author = {Greenwood, D. A and Cottingham, W. N},
	title = {Electricity and magnetism},
	publisher = {Cambridge University Press},
	year = {1995},
	address = {Cambridge},
	note = {Includes bibliographical references (p. 176) and index.},
	url = {http://www.loc.gov/catdir/description/cam024/90026471.html}
}