@TechReport{seus-tr,
  author =	 {Shayan Ghazizadeh and Sudarshan S. Chawathe},
  title =	 {Discovering Frequent Structures using Summaries},
  institution =  {Computer Science Department, University of Maryland},
  year = 	 2001,
  month = 	 nov,
  number =	 {CS-TR-4364},
  address =	 {College Park, Maryland}
}