A relativistic iron emission line from the neutron star low-mass X-ray binary GX 3+1 S. Piraino, A. Santangelo, P. Kaaret, B. Mück, A. D’Aì, T. Di Salvo, R. Iaria, N. Robba, L. Burderi and E. Egron A&A, 542 (2012) L27 Published online: 30 May 2012 DOI: 10.1051/0004-6361/201219283