@techreport{NBERw12604,
 title = "Strategic Incompatibility in ATM Markets",
 author = "Christopher R. Knittel and Victor Stango",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "12604",
 year = "2006",
 month = "October",
 URL = "http://www.nber.org/papers/w12604",
}