Shin-Ichi Nishiyama is on CollEc

rank value
closeness 19823 5.37895
betweenness 13860 0.546261

co-authors

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