A 16 kb/s APC system with adaptive postfilter and evaluation of its performance. - D. J. Zarkadis; Barry G. Evans (ICASSP, 1988)

Coding of the LPC spectral parameters using vector predictive quantization. - D. J. Zarkadis; Barry G. Evans (EUROSPEECH, 1989)

Adaptive spectral weighting for vector predictive coding of the LPC-spectra. - D. J. Zarkadis (EUROSPEECH, 1991)