A modified CELP model with computationally efficient adaptive codebook search. - Lúcio Martins da Silva; Abraham Alcaim (IEEE Signal Process. Lett., 1995)

CELP with priority to critical segments. - Lúcio Martins da Silva; Abraham Alcaim (EUSIPCO, 1998)

Differential coding of speech LSF parameters using hybrid vector quantization and bidirectional prediction. - Lúcio Martins da Silva; Abraham Alcaim (IEEE Trans. Speech Audio Process., 2000)