David Roberts is on CollEc

rank value
closeness 19183 5.34881
betweenness 22350 0.128372

co-authors

  1. B Brorsen [pbr231]
  2. Bob Hearne [phe388]
  3. Burton English [pen95]
  4. Jayson Lusk [plu63]
  5. Tracy Boyer [pbo918]
  6. Jeremy Jackson [pja307]
  7. Roland Roberts [pro991]