Costamante, L. Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;
Costamante, L. (2007). A low density of the extragalactic background light revealed by the HESS spectra of the BL Lac objects 1ES 1101-232 and H 2356-309. Astrophysics and Space Science, 309(1-4), 487-495.