@techreport{rountev-tr68,
  author = "Atanas Rountev and Scott Kagan and Jason Sawin", 
  title = "Coverage Criteria for Testing of Object Interactions in Sequence Diagrams",
  institution = "Ohio State University",
  number = "OSU-CISRC-12/04-TR68",
  year = 2004,
  month = dec
}