Yoichi Arai is on CollEc

rank value
closeness 12459 5.06072
betweenness 18912 0.31787

co-authors

  1. Eiji Kurozumi [pku189]
  2. Yu-Chin Hsu [phs7]
  3. MYUNG HWAN SEO [pse168]
  4. Takeo Hoshi [pho107]