@techreport{NBERw13398,
 title = "On the Optimal Choice of a Monetary Policy Instrument",
 author = "Andrew Atkeson and V. V. Chari and Patrick J. Kehoe",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13398",
 year = "2007",
 month = "September",
 URL = "http://www.nber.org/papers/w13398",
}