NGC 7679: an anomalous, composite Seyfert 1 galaxy whose X-ray luminous AGN vanishes at optical wavelengthsL. M. Buson, M. Cappellari, E. M. Corsini, E. V. Held, J. Lim and A. PizzellaA&A, 447 2 (2006) 441-451DOI: https://doi.org/10.1051/0004-6361:20053204
