Einstein-Weyl Geometry

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