@TechReport{CEPII:1997-07,
author={Lionel Fontagné and Michaël Freudenberg and Nicolas Peridy},
title={Trade Patterns Inside the Single Market},
year=1997,
month=April,
institution={CEPII},
type={Working Papers},
url={http://www.cepii.fr/CEPII/fr/publications/wp/abstract.asp?NoDoc=56},
number={1997-07},
}