Collmar, W. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society; MPI for Extraterrestrial Physics, Max Planck Society;
den Hartog, P. R., Hermsen, W., Kuiper, L., Vink, J., in 't Zand, J. J. M., & Collmar, W. (2006). INTEGRAL survey of the Cassiopeia region in hard X rays. Astronomy & Astrophysics, 451(2), 587-602. doi:10.1051/0004-6361:20054711.