Haxell, P. E.

• The Electronic Journal of Combinatorics Volume 19, Issue 1 (2012) - Papers
  On Ryser's conjecture
  Abstract  PDF
• The Electronic Journal of Combinatorics Volume 24, Issue 3 (2017) - Papers
  A Note on Intersecting Hypergraphs with Large Cover Number
  Abstract  PDF  source file  Official source