Pietsch, W. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Haberl, F. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Tüllmann, R., Gaetz, T. J., Plucinsky, P. P., Kuntz, K. D., Williams, B. F., Pietsch, W., et al. (2011). The Chandra ACIS Survey of M33 (ChASeM33): the final source catalog. The Astrophysical Journal Supplement Series, 193(2): 26, pp. 1-26. doi:10.1088/0067-0049/193/2/31.