Aharonian, F., Akhperjanian, A. G., Anton, G., de Almeida, U. B., Bazer-Bachi, A. R., Becherini, Y., et al. (2009). Constraints on the multi-TeV particle population in the Coma galaxy cluster with HESS observations. Astronomy & Astrophysics, 502(2), 437-443.