@TechReport{xhints-tr,
  author =	 {Akhil Gupta and Sudarshan S. Chawathe},
  title =	 {Skipping Streams with {XHints}},
  institution =	 {Computer Science Department, University of Maryland},
  year =	 2004,
  number =	 {CS-TR-4566},
  address =	 {College Park, Maryland},
  month =	 feb,
  annote =       {Also UMIACS-TR-2004-11.}
}