Strong, Andrew W. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Moskalenko, I. V., & Strong, A. W. (2005). Diffuse γ-ray emission: lessons and perspective. In T. Bulik, B. Rudak, & G. Madejski (Eds.), Astrophysical sources of high energy particles and radiation (pp. 57-62). Melville, N.Y., USA: American Institute of Physics.