4800 and 7200 bit/sec hybrid codebook multipulse coding. - Richard L. Zinser; Steven R. Koch (ICASSP, 1989)

CELP coding at 4.0 kb/sec and below: improvements to FS-1016. - Richard L. Zinser; Steven R. Koch (ICASSP, 1992)

Multiple source MOS evaluation of a flexible low-rate vocoder. - Richard L. Zinser; Mark L. Grabb; Steven R. Koch (ICASSP, 1998)

2.4 kb/sec compressed domain teleconference bridge with universal transcoder. - Richard L. Zinser; Philip T. Choong; Steven R. Koch (ICASSP, 2001)