An unidentified TeV source in the vicinity of Cygnus OB2 F. Aharonian, A. Akhperjanian, M. Beilicke, K. Bernlöhr, H. Börst, H. Bojahr, O. Bolz, T. Coarasa, J. Contreras, J. Cortina et al. (52 more) A&A, 393 2 (2002) L37-L40 Published online: 23 September 2002 DOI: 10.1051/0004-6361:20021171