The voice activity detector for the Pan-European digital cellular mobile telephone service. - D. K. Freeman; G. Cosier; C. B. Southcott; I. Boyd (ICASSP, 1989)

Improving DSP software productivity using an optimising Pascal compiler for the AT&T DSP32C. - D. Crookes; D. K. Freeman; C. D. Gostling (Microprocessing and Microprogramming, 1990)