John Hamman is on CollEc

rank value
closeness 20777 5.04057
betweenness 25988 0.159853

co-authors

  1. Roberto Weber [pwe237]
  2. Danila Serra [pse222]
  3. Jose Castillo [pca1226]
  4. Mikhail Drugov [pdr49]
  5. John Lightle [pli1025]