Search for spectroscopical signatures of transiting HD 209458b's exosphere C. Moutou, A. Coustenis, J. Schneider, R. St Gilles, M. Mayor, D. Queloz and A. Kaufer A&A, 371 1 (2001) 260-266 Published online: 15 May 2001 DOI: 10.1051/0004-6361:20010406