Exoplanet transmission spectroscopy: accounting for the eccentricity and the longitude of periastron - Superwinds in the upper atmosphere of HD 209458b?M. Montalto, N. C. Santos, I. Boisse, G. Boué, P. Figueira and S. SousaA&A, 528 (2011) L17DOI: https://doi.org/10.1051/0004-6361/201116492