INTEGRAL observation of hard X-ray variability of the TeV binary LS 5039/RX J1826.2-1450 A. D. Hoffmann, D. Klochkov, A. Santangelo, D. Horns, A. Segreto, R. Staubert and G. Pühlhofer A&A, 494 3 (2009) L37-L40 Published online: 14 January 2009 DOI: 10.1051/0004-6361:200811397