The 2175 Å\ extinction feature in the optical afterglow spectrum of GRB 180325A at z=2.25
Preprint published in 2018 by
T. Zafar,
K. E. Heintz,
J. P. U. Fynbo,
D. Malesani,
J. Bolmer,
C. Ledoux,
M. Arabsalmani,
L. Kaper,
S. Campana,
R. L. C. Starling,
J. Selsing,
D. A. Kann,
A. de Ugarte Postigo 
,
T. Schweyer,
L. Christensen
and other authors.
,
T. Schweyer,
L. Christensen
and other authors.
