Dust reddening and extinction curves toward gamma-ray bursts at z > 4J. Bolmer, J. Greiner, T. Krühler, P. Schady, C. Ledoux, N. R. Tanvir and A. J. LevanA&A, 609 (2018) A62DOI: https://doi.org/10.1051/0004-6361/201731255
