1. The Descriptive Set Theory of Polish Group Actions;Becker,1996
2. On sets of Haar measure zero in abelian Polish groups;Christensen;Israel J. Math.,1973
3. Michael P. Cohen, Robert R. Kallman, Openly Haar null sets and conjugacy in polish groups, preprint.
4. On Haar meager sets;Darji;Topology Appl.,2013
5. Examples of nonshy sets;Dougherty;Fund. Math.,1994