Yuki Nakandakari, Shuichi Tsukuda. An Elementary Proof That the Third Finite Subset Space of the Circle is the 3-Sphere. The American Mathematical Monthly. 2020. 127. 9. 789-805
Shuichi Tsukuda. INDEPENDENCE COMPLEXES AND INCIDENCE GRAPHS. CONTRIBUTIONS TO DISCRETE MATHEMATICS. 2017. 12. 1. 28-46