Fully vector-quantized multipulse LPC at 4800 bps. - Hitoshi Koyama; Allen Gersho (ICASSP, 1986)

Blockdiagram programming system for 32 bit floating point signal processor. - Ichiro Kuroda; Takao Nishitani; Teiji Takeuchi; Hitoshi Koyama; Junko Sunaga; Shuji Matsukawa (ICASSP, 1987)

An encoder/decoder chip set for the MPEG video standard. - Ichiro Tamitani; Mutsumi Ohta; Yasushi Ooi; Akio Yoshida; Mamoru Nomura; Hitoshi Koyama; Takao Nishitani (ICASSP, 1992)

Computer-Aided Diagnosis Scheme for Distinguishing Between Benign and Malignant Masses in Breast DCE-MRI. - Emi Honda; Ryohei Nakayama; Hitoshi Koyama; Akiyoshi Yamashita (J. Digit. Imaging, 2016)