Robert Helsley is on CollEc

rank value
closeness 9298 4.90996
betweenness 9824 1.04805

co-authors

  1. William Strange [pst178]
  2. Yves Zenou [pze5]
  3. Jan Brueckner [pbr241]
  4. Maurice Levi [ple633]
  5. Dennis Capozza [pca514]