Shin-Ichi Nishiyama is on CollEc

rank value
closeness 20474 5.3596
betweenness 15483 0.465434

co-authors

  1. Ryo Kato [pka55]
  2. WAKO WATANABE [pwa369]
  3. Masao Ogaki [pog9]
  4. Ian Christensen [pch762]