Observations of selected AGN with HESS F. Aharonian, A. G. Akhperjanian, A. R. Bazer-Bachi, M. Beilicke, W. Benbow, D. Berge, K. Bernlöhr, C. Boisson, O. Bolz, V. Borrel et al. (89 more) A&A, 441 2 (2005) 465-472 Published online: 19 September 2005 DOI: 10.1051/0004-6361:20053478