@TechReport{CEPII:2014-01,
author={Deniz Ünal},
title={La géographie du commerce mondial : 1967-2011},
year=2014,
month=January,
institution={CEPII},
type={Data},
url={http://www.cepii.fr/CEPII/en/publications/panorama/abstract.asp?NoDoc=6301},
number={2014-01},
}