Robert Helsley is on CollEc

rank value
closeness 7978 4.94786
betweenness 11373 0.784049

co-authors

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