Optical properties of low-dimensional systems : The Bechgaard salts case L. Degiorgi, V. Vescoli, W. Henderson, G. Gruner et L. K. MontgomeryJ. Phys. IV France, 10 PR3 (2000) Pr3-103-Pr3-112DOI: https://doi.org/10.1051/jp4:2000310