Briel,
U. G.
Max Planck Society;
/persons/resource/persons4853
Freyberg,
M. J.
High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
/persons/resource/persons16282
Haberl,
F.
High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;