Molecular gas in NUclei of GAlaxies (NUGA): VI. Detection of a molecular gas disk/torus via HCN in the Seyfert 2 galaxy NGC 6951?M. Krips, R. Neri, S. García-Burillo, F. Combes, E. Schinnerer, A. J. Baker, A. Eckart, F. Boone, L. Hunt, S. Leon and L. J. TacconiA&A, 468 3 (2007) L63-L66DOI: https://doi.org/10.1051/0004-6361:20066785