?url_ver=Z39.88-2004&rft_id=10.1007%2F978-3-642-25483-3%E2%82%81%E2%82%85&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=W.&rft.au=Matcha%2C+W.&rft.aulast=Matcha&rft.date=2011&rft.isbn=9783642254826&rft.issn=18650929&rft.title=Communications+in+Computer+and+Information+Science&rft.atitle=Preliminary+investigation+on+the+use+of+augmented+reality+in+collaborative+learning&rft.pages=189-198&rft.volume=254+CC&rft.issue=PART+4&rft.genre=article