Transmission spectrum of Venus as a transiting exoplanet D. Ehrenreich, A. Vidal-Madjar, T. Widemann, G. Gronoff, P. Tanga, M. Barthélemy, J. Lilensten, A. Lecavelier des Etangs and L. Arnold A&A, 537 (2012) L2 Published online: 23 December 2011 DOI: 10.1051/0004-6361/201118400