Aharonian, F., Akhperjanian, A., Aye, K., Bazer-Bachi, A., Beilicke, M., Benbow, W., …Wagner, S. (2005). H.E.S.S. observations of PKS 2155-304. Astronomy & Astrophysics, 430(3), 865-875. https://doi.org/10.1051/0004-6361%3A20041853