Roger Hartley is on CollEc

rank value
closeness 9790 4.92584
betweenness 19862 0.292473

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]