Chemistry in disks - II. Poor molecular content of the AB Aurigae diskK. Schreyer, S. Guilloteau, D. Semenov, A. Bacmann, E. Chapillon, A. Dutrey, F. Gueth, T. Henning, F. Hersant, R. Launhardt, J. Pety and V. PiétuA&A, 491 3 (2008) 821-827DOI: https://doi.org/10.1051/0004-6361:20079318