A prefix-free coding for finite-state noiseless channels with small coding delay. - Ken-ichi Iwata; Takuya Koyama (ISITA, 2010)

A Compact Mid-Infrared Spectroscopy System for Healthcare Applications Based on a Wavelength-Swept, Pulsed Quantum Cascade Laser. - Takuya Koyama; Naoto Shibata; Saiko Kino; Atsushi Sugiyama; Naota Akikusa; Yuji Matsuura (Sensors, 2020)