Classification of Levi degenerate homogeneous CR-manifolds in dimension 5 Gregor FelsWilhelm Kaup OriginalPaper 10 October 2008 Pages: 1 - 82
Cluster algebras and triangulated surfaces. Part I: Cluster complexes Sergey FominMichael ShapiroDylan Thurston OriginalPaper 10 October 2008 Pages: 83 - 146