@TechReport{,
   author = 	   {G. Ramirez and T. Westerveld and A.P. de Vries},
   title = 	   {Structural Features in Content Oriented XML Retrieval},
   institution =   {CWI,Centre for Mathematics and Computer Science},
   year = 	   {2005},
   number = 	   {INS-E0508}
}