?url_ver=Z39.88-2004&rft_id=10.1109%2FFIE.2013.6684885&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Piedra+Pullaguari%2C+Nelson+Oswaldo&rft.aulast=Piedra+Pullaguari&rft.aufirst=Nelson+Oswaldo&rft.date=2013&rft.isbn=978-1-4673-5261-1&rft.title=Using+linked+open+data+to+improve+the+search+of+open+educational+resources+for+engineering+students&rft.btitle=2013+IEEE+Frontiers+in+Education+Conference+(FIE)&rft.genre=proceeding