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Title:
Scattering of null geodesics in asymptotically de Sitter 2+1 Einstein-Weyl spaces and holomorphic discs (joint with Claude LeBrun)

Speaker:
Lionel Mason

Link:
http://www.birs.ca/events/2013/5-day-workshops/13w5036/videos/watch/201309190959-Mason.html

Workshop:
Birs- 13w5036: Geometry and Inverse Problems