Gallo, L. C. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Boller, Th. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Gallo, L. C., Boller, T., Brandt, W. N., Fabian, A. C., & Vaughan, S. (2004). I Zw 1 observed with XMM-Newton. Astronomy & Astrophysics, 417(1), 29-38. doi:10.1051/0004-6361.20034411.