Burwitz, V. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Beuermann, K., Burwitz, V., & Rauch, T. (2007). Establishing HZ 43 A, Sirius B, and RXJ1856−37 as soft X-ray standards: a cross-calibration between the Chandra LETGS, the EUVE Spectrometer, and the ROSAT PSPC. In R. Napiwotzki, & M. Burleigh (Eds.), 15th European Workshop on White Dwarfs (pp. 221-224). San Francsisco, CA (US): Astronomical Society of the Pacific <ASP>.