Ryohei Hisano, Hiroshi Iyetomi, Takayuki Mizuno. Identifying the Hierarchical Influence Structure Behind Smart Sanctions Using Network Analysis. 2019
Ryohei Hisano, Didier Sornette. Challenges to the Assessment of Time-to-Proof of Mathematical Conjectures. MATHEMATICAL INTELLIGENCER. 2013. 35. 4. 10-17
Ryohei Hisano, Didier Sornette. On the distribution of time-to-proof of mathematical conjectures. The Mathematical Intelligencer. 2013. 1-8