@TechReport{clutches-tr,
  author = 	 {Sudarshan S. Chawathe},
  title = 	 {Tracking Moving Clutches in Streaming Graphs},
  institution =  {Computer Science Department, University of Maryland},
  year = 	 2002,
  number =	 {CS-TR-4376},
  address =	 {College Park, Maryland},
  month =	 oct,
  annote =	 {Also UMIACS-TR-2002-56.}
}