@book{13929,
	author = {Griffiths, David J.},
	title = {Introduction to electrodynamics /},
	publisher = {Addison-Wesley,},
	year = {2012.},
	series = {4th edition.},
	address = {[S.l.] :},
	edition = {4th ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0321856562/chopaconline-20}
}