Haberl, F. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Haberl, F. (2002). First XMM-Newton results from intermediate polars. In B. Gänsicke, K. Beuermann, & K. Reinsch (Eds.), The Physics of Cataclysmic Variables and Related Objects (pp. 151-152). San Francisco: Astronomical Society of the Pacific.