On the Complexity of Composite Numbers. - Toshiya Itoh; Kenji Horikawa (ISAAC, 1992)

Design for Long-Reach Coexisting PON in Consideration of Area Characteristics with Wavelength Selective Asymmetrical Splitters. - Atsuko Kawakita; Kazutaka Hara; Yasutaka Kimura; Kenji Horikawa; Hiroyuki Furukawa; Yasuhiro Suzuki; Satoshi Ikeda (OECC/PSC, 2019)