A network formation process converges to the complete collaboration network. - Yasunori Okumura (Math. Soc. Sci., 2007)

Spatial competition and collaboration networks. - Yasunori Okumura (Int. J. Game Theory, 2012)

Priority matchings revisited. - Yasunori Okumura (Games Econ. Behav., 2014)

What proportion of sincere voters guarantees efficiency? - Yasunori Okumura (Soc. Choice Welf., 2019)

Improving efficiency in school choice under partial priorities. - Minoru Kitahara; Yasunori Okumura (Int. J. Game Theory, 2021)

Corrigendum to "Efficiency and stability under substitutable priorities with ties" [J. Econ. Theory 184 (2019) 104950]. - Aytek Erdil; Minoru Kitahara; Taro Kumano; Yasunori Okumura (J. Econ. Theory, 2022)

Extensions of partial priorities and stability in school choice. - Minoru Kitahara; Yasunori Okumura (Math. Soc. Sci., 2024)

Aggregating incomplete rankings. - Yasunori Okumura (Math. Soc. Sci., 2025)