@inproceedings{15078,
  author       = {{Böttcher, Stefan and Steinmetz, Rita}},
  booktitle    = {{Database and XML Technologies, First International XML Database Symposium, XSym 2003}},
  isbn         = {{9783540200550}},
  issn         = {{0302-9743}},
  pages        = {{85--99}},
  title        = {{{A DTD Graph Based XPath Query Subsumption Test}}},
  doi          = {{10.1007/978-3-540-39429-7_6}},
  year         = {{2003}},
}