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van Alphen, P., & Pols, L. C. W. (1989). A real-time FIR-based filterbank, as the acoustic front end of a speech recognizer. In Proceedings EUROSPEECH'89, 1989. Vol. 1 (pp. 621-624). CEP Consultants.
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van Wieringen, A., & Pols, L. C. W. (1989). Discrimination in closely and sparsely spectralled harmonic complexes. Proceedings (Instituut voor Fonetische Wetenschappen, Universiteit van Amsterdam), 13, 27-43.
van Son, N., & Pols, L. C. W. (1989). Second quality evaluation of a French diphone-based synthesis system: identification and quality ratings of consonant clusters. Unknown Publisher.
van Son, N., & Pols, L. C. W. (1989). Final evaluation of three multipulse LPC coders: CVC intelligibility, quality assessment and speaker identification. Unknown Publisher.
van Son, N., & Pols, L. C. W. (1989). Intelligibility of words in isolation and words in semantically unpredictable sentences. a study of two diphone-based speech synthesis systems in French. Unknown Publisher.