Long-term lightcurves from combined unified very high energy γ-ray data M. Tluczykont, E. Bernardini, K. Satalecka, R. Clavero, M. Shayduk and O. Kalekin A&A, 524 (2010) A48 Published online: 23 November 2010 DOI: 10.1051/0004-6361/201015193