Tree searched multi-stage vector quantization of LPC parameters for 4 kb/s speech coding. - Bhaskar Bhattacharya; Wilf P. LeBlanc; Samy A. Mahmoud; Vladimir Cuperman (ICASSP, 1992)

Efficient search and design procedures for robust multi-stage VQ of LPC parameters for 4 kb/s speech coding. - Wilf P. LeBlanc; B. Bhattacharya; Samy A. Mahmoud; Vladimir Cuperman (IEEE Trans. Speech Audio Process., 1993)

Low complexity, low delay speech coding for indoor wireless communications. - Wilf P. LeBlanc; Samy A. Mahmoud (VTC, 1994)

A low power, single chip realization of a low-speed, low-delay CELP coder/decoder for indoor wireless systems. - D. P. Noel; Tad A. Kwasniewski; Samy A. Mahmoud; Wilf P. LeBlanc (VTC, 1994)