@TechReport{CEPII:2013-23,
author={Charlotte Emlinger and Houssein Guimbard},
title={Per-Unit Duties: Friends or Foes of Developing Country Exporters?},
year=2013,
month=July,
institution={CEPII},
type={Working Papers},
url={http://www.cepii.fr/CEPII/fr/publications/wp/abstract.asp?NoDoc=5980},
number={2013-23},
}