Low-power 1: 16 DEMUX and one-chip CDR with 1: 4 DEMUX using InP-InGaAs heterojunction bipolar transistors. - Kiyoshi Ishii; Hideyuki Nosaka; Hiroki Nakajima; Kenji Kurishima; Minoru Ida; Noriyuki Watanabe; Yasurou Yamane; Eiichi Sano; Takatomo Enoki (IEEE J. Solid State Circuits, 2002)

Equivalent circuit simulation of light propagation in optical fiber. - Hiroki Nakajima; Takayuki Yamanaka (IEICE Electron. Express, 2009)

Toward Developer-like Automated Program Repair - Modification Comparisons between GenProg and Developers. - Hiroki Nakajima; Yoshiki Higo; Haruki Yokoyama; Shinji Kusumoto (APSEC, 2016)