@ARTICLE{CEPII:142,
title={Aspects de la spécialisation européenne},
author={Michaël Freudenberg and Deniz Ünal-Kesenci },
year=1996,
month=January,
journal={La lettre du CEPII},
number={142},
institution={CEPII},
abstract={},
keywords={ },
url={http://www.cepii.fr/CEPII/en/publications/lettre/abstract.asp?NoDoc=570}
}