Spatially divided channel scheme using sectored antennas for CSMA/CA "directional CSMA/CA". - Kou Kobayashi; Masao Nakagawa (PIMRC, 2000)

Improving Document Similarity Calculation Using Cosine-Similarity Graphs. - Yasunao Takano; Yusuke Iijima; Kou Kobayashi; Hiroshi Sakuta; Hiroki Sakaji; Masaki Kohana; Akio Kobayashi (AINA, 2019)