Einstein-Weyl Geometry

• Compact Einstein-Weyl Manifolds with Large Symmetry Group
  by Anders Bisbjerg Madsen, Henrik Pedersen, Yat Sun Poon and Andrew Swann
  Duke Math. J. 88, 407–434, 1997
  Corrigendum: Duke Math. J. 100, 167, 1999.
• Einstein-Weyl Deformations and Submanifolds
  by Henrik Pedersen, Yat Sun Poon and Andrew Swann
  International J. Math. 7, 705–719, 1996.
• The Hitchin-Thorpe Inequality for Einstein-Weyl Manifolds
  by Henrik Pedersen, Yat Sun Poon and Andrew Swann
  Bull. London Math. Soc. 26, 191–194, 1994.
• The Einstein-Weyl Equations in Complex and Quaternionic Geometry
  by Henrik Pedersen, Yat Sun Poon and Andrew Swann
  Differential Geometry and its Applications 3, 309–321, 1993.
• Einstein-Weyl Geometry, the Bach Tensor and Conformal Scalar Curvature
  by Henrik Pedersen and Andrew Swann
  J. reine angew. Math. 441, 99–113, 1993.
• Riemannian Submersions, Four-Manifolds and Einstein-Weyl Geometry
  by Henrik Pedersen and Andrew Swann
  Proc. London Math. Soc. (3) 66, 381–399, 1993.