Wouter Gelade, Tomasz Idziaszek, Wim Martens, Frank Neven. Simplifying XML schema: single-type approximations of regular tree languages. In Jan Paredaens, Dirk Van Gucht, editors, Proceedings of the Twenty-Ninth ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems, PODS 2010, June 6-11, 2010, Indianapolis, Indiana, USA. pages 251-260, ACM, 2010. [doi]
Abstract is missing.