Roger Vickerman is on CollEc

rank value
closeness 2251 4.6422
betweenness 8978 1.09018

co-authors

  1. John Peirson [ppe341]
  2. Piet Rietveld [pri130]
  3. Charles Lindsey [pli342]
  4. Ron Johnston [pjo75]
  5. William Collier [pco148]
  6. Tim Barmby [pba994]
  7. Erik Verhoef [pve121]
  8. Stef Proost [ppr114]