Roger Perman is on CollEc

rank value
closeness 17866 4.96279
betweenness 13540 0.815068

co-authors

  1. David Stern [pst75]
  2. Joseph Byrne [pby6]
  3. P B Anand [pan205]
  4. Peter McGregor [pmc127]
  5. John Swales [psw28]