Karjalainen, M.A. & Laine, U.K. & Toivonen, R.O.: Aids for the handicapped based on "Synte 2" speech synthesizer. in Proc. of IEEE Int. Conf. Acoustic Speech and Signal Processing, ICASSP-80, (Denver, Colorado), 9–11 April 1980. Teoksen verkkoversio. (Arkistoitu – Internet Archive)
Karjalainen, M.A. & Laine, U.K. & Toivonen, R.O.: Aids for the handicapped based on "Synte 2" speech synthesizer. in Proc. of IEEE Int. Conf. Acoustic Speech and Signal Processing, ICASSP-80, (Denver, Colorado), 9–11 April 1980. Teoksen verkkoversio. (Arkistoitu – Internet Archive)