Bolmer, J., Greiner, J., Krühler, T., Schady, P., Ledoux, C., Tanvir, N. R., et al. (2018). Dust reddening and extinction curves toward gamma-ray bursts at z > 4. Astronomy & Astrophysics, 609: A62. doi:10.1051/0004-6361/201731255.