GRB 171211A: Swift detection of a possibly short burst. Gropp, J. D. ; Beardmore, A. P. ; Breeveld, A. A. ; D'Avanzo, P. ; Evans, P. A. ; Kennea, J. A. ; Lien, A. Y. ; Page, K. L. Abstract Publication: GRB Coordinates Network Pub Date: 2017 Bibcode: 2017GCN.22234....1G