Haberl, F. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Pietsch, W. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Haberl, F., & Pietsch, W. (2004). X-ray observations of Be/X-ray binaries in the SMC. Astronomy & Astrophysics, 414(2), 667-676. doi:10.1051/0004-6361:20031654.