Kazuhiko Oyamada is on CollEc

rank value
closeness 27922 5.23911
betweenness 22752 0.277866

co-authors

  1. Roberto Roson [pro856]
  2. Ken Itakura [pit26]
  3. Etsuyo Michida [pmi638]
  4. Kaoru Nabeshima [pna203]