Ryuichiro Ishikawa is on CollEc

rank value
closeness 18018 5.32816
betweenness 19325 0.248917

co-authors

  1. Tomoki Fujii [pfu41]
  2. Nobuyuki Hanaki [pha135]
  3. Eizo AKIYAMA [pak195]
  4. Yukihiko Funaki [pfu167]
  5. Noritaka Kudoh [pku73]
  6. Adrian Penalver [ppe794]