Roger Hartley is on CollEc

rank value
closeness 9159 4.93144
betweenness 19226 0.305194

co-authors

  1. Richard Cornes [pco341]
  2. Lisa Farrell [pfa186]
  3. Alex Dickson [pdi31]
  4. Gauthier Lanot [pla226]
  5. Todd Sandler [psa708]
  6. Ian Walker [pwa298]