Performance of a 32 kbit/s ADPCM coder for digital long-haul telephone transmission. - Georges Bonnerot; Jean-Marie Raulin; Maurice G. Bellanger (ICASSP, 1981)

A 32 kbit/s PCM to ADPCM converter. - Jean-Marie Raulin; Jean-Louis Jeandot (ICASSP, 1982)

A 60 Channel PCM-ADPCM Converter. - Jean-Marie Raulin; Georges Bonnerot; Jean-Louis Jeandot; René Lacroix (IEEE Trans. Commun., 1982)