@book{21421,
	author = {Antoniou, G. and Van Harmelen, Frank.},
	title = {A semantic Web primer /},
	publisher = {MIT Press,},
	year = {c2008.},
	address = {Cambridge, Mass. :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0718/2007020429.html}
}