@TechReport{CEPII:2013-04,
author={Sami Bensassi and José de Sousa and Joachim Jarreau},
title={Preferential Trade Agreements Proliferation: Sorting out the Effects},
year=2013,
month=February,
institution={CEPII},
type={Working Papers},
url={https://www.cepii.fr/CEPII/fr/publications/wp/abstract.asp?NoDoc=5148},
number={2013-04},
}