1. The Descriptive Set Theory of Polish Group Actions;Becker,1996
2. P.J. Cameron, A.M. Vershik, Some isometry groups of Urysohn space, Preprint, 2004
3. On the Classification of Polish Metric Spaces up to Isometry;Gao,2003
4. Metric Structures for Riemannian and Non-Riemannian Spaces;Gromov,1998
5. On a property of Urysohn's universal metric space;Huhunaišvili;Dokl. Akad. Nauk USSR (N.S.),1955