ICASSP '77. IEEE International Conference on Acoustics, Speech, and Signal Processing Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '77.. 2:327-331 1977
ICASSP '85. IEEE International Conference on Acoustics, Speech, and Signal Processing Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '85.. 10:256-259 1985