Evidence of polarisation in the prompt gamma-ray emission from GRB 930131 and GRB 960924D. R. Willis, E. J. Barlow, A. J. Bird, D. J. Clark, A. J. Dean, M. L. McConnell, L. Moran, S. E. Shaw and V. SgueraA&A, 439 1 (2005) 245-253DOI: https://doi.org/10.1051/0004-6361:20052693