Mrk 421, Mrk 501, and 1ES 1426+428 at 100 GeV with the CELESTE Cherenkov telescope
D. A. Smith, E. Brion, R. Britto, P. Bruel, J. Bussons Gordo, D. Dumora, E. Durand, P. Eschstruth, P. Espigat, J. Holder, A. Jacholkowska, J. Lavalle, R. Le Gallou, B. Lott, H. Manseri, F. Münz, E. Nuss, F. Piron, R. C. Rannot, T. Reposeur and T. Sako
A&A, 459 2 (2006) 453-464
DOI: https://doi.org/10.1051/0004-6361:20065884