Pietsch, W. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Bauer, M. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Trinchieri, G., Pietsch, W., & Bauer, M. (2008). A few examples of source variability in NGC 253. In S. Carpano, M. Ehle, & W. Pietsch (Eds.), Proceedings of the ESAC Faculty Workshop on X-rays from Nearby Galaxies (pp. 145-146). Garching b. München: Max-Planck-Institut für extraterrestrische Physik.