@techreport{NBERw13107,
 title = "Rational Pessimism, Rational Exuberance, and Asset Pricing Models",
 author = "Ravi Bansal and A. Ronald Gallant and George Tauchen",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13107",
 year = "2007",
 month = "May",
 URL = "http://www.nber.org/papers/w13107",
}