@techreport{NBERw13899,
 title = "Is Protection Really for Sale? A Survey and Directions for Future Research",
 author = "Susumu Imai and Hajime Katayama and Kala Krishna",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13899",
 year = "2008",
 month = "March",
 URL = "http://www.nber.org/papers/w13899",
 abstract = {This paper critically and selectively surveys the literature on protection for sale and discusses directions for future research in this area. It suggests that the standard approach needs to be augmented to provide more compelling tests of this model.},
}