Koolen, Jack H.

• The Electronic Journal of Combinatorics Volume 16, Issue 1 (2009) - Research Papers
  Bounds for the Hückel Energy of a Graph
  Abstract  PDF
• The Electronic Journal of Combinatorics Volume 20, Issue 1 (2013) - Papers
  Distance-Regular Graphs with a Relatively Small Eigenvalue Multiplicity
  Abstract  PDF  source file  Official source
• The Electronic Journal of Combinatorics Dynamic Surveys - Surveys
  Distance-Regular Graphs
  Abstract  PDF  source files  response to referee  Official Source
• The Electronic Journal of Combinatorics Volume 24, Issue 1 (2017) - Papers
  An Application of Hoffman Graphs for Spectral Characterizations of Graphs
  Abstract  PDF  yak submission  Official source files
• The Electronic Journal of Combinatorics Volume 30, Issue 2 (2023) - Papers
  A New Feasibility Condition for the AT4 Family
  Abstract  PDF