?url_ver=Z39.88-2004&rft_id=10.1109%2FICALT.2004.1357643&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Ohene-Djan%2C+James&rft.aulast=Ohene-Djan&rft.aufirst=James&rft.isbn=0769521819%3B+978-076952181-7&rft.title=Mak-messenger+and+finger-chat%2C+communications+technologies+to+assist+in+the+teaching+of+signed+languages+to+the+deaf+and+hearing&rft.date=2004&rft.genre=proceeding