Molecular hydrogen in the circumstellar disks of pre-main sequence stars M. Deleuil, J. C. Bouret, P. Feldman, A. Lecavelier des Etangs, C. Martin-Zaidi, A. Roberge and A. Vidal-Madjar EAS Publications Series, 41 (2010) 155-165 Published online: 08 January 2010 DOI: 10.1051/eas/1041011