Multicodebook vector quantization of LPC parameters. - Costas S. Xydeas; Thomas M. Chapman (ICASSP, 1998)

Segmental prototype interpolation coding. - Costas S. Xydeas; Thomas M. Chapman (ICASSP, 1999)

Secondary codebook storage quantisation. - Thomas M. Chapman; Costas S. Xydeas (EUROSPEECH, 1999)