@TechReport{CEPII:2002-12,
author={Sophie Chauvin and Guillaume Gaulier},
title={Regional Trade Integration in Southern Africa},
year=2002,
month=October,
institution={CEPII},
type={Working Papers},
url={http://www.cepii.fr/CEPII/fr/publications/wp/abstract.asp?NoDoc=155},
number={2002-12},
}