Rau, A. High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society;
Marcinkowski, R., Denis, M., Bulik, T., Laurent, P., Goldoni, P., & Rau, A. (2007). Extremely hard gamma-ray spectra of the GRBs detected with INTEGRAL. In S. Grebenev, R. Sunyaev, & C. Winkler (Eds.), Proceedings of the 6th Integral Workshop - The Obscured Universe (pp. 605-608). Noordwijk, The Netherlands: ESA Publications Division.