Schulze, S., Klose, S., Björnsson, G., Jakobsson, P., Kann, D. A., Rossi, A., Krühler, T., Greiner, J., & Ferrero, P. (2011). The circumburst density profile around GRB progenitors. In J. E., McEnery, J. L., Racusin, & N., Gehrels (Eds.), Gamma Ray Bursts 2010 (pp. 165-168).