How GitHub Contributing.md Contributes to Contributors. - Naoki Kobayakawa; Kenichi Yoshida (COMPSAC (1), 2017)

Study on Influencers of Cryptocurrency Follow-Network on GitHub. - Naoki Kobayakawa; Kenichi Yoshida (PKAW, 2019)

Impact of Cryptocurrency Market Capitalization on Open Source Software Participation. - Naoki Kobayakawa; Mitsuyoshi Imamura; Kei Nakagawa; Kenichi Yoshida (J. Inf. Process., 2020)