GRB 150403A: Swift detection of a burst with an optical counterpart. Lien, A. Y. ; Barthelmy, S. D. ; D'Elia, V. ; Gehrels, N. ; Kennea, J. A. ; Marshall, F. E. ; Page, K. L. ; Sbarufatti, B. Abstract Publication: GRB Coordinates Network Pub Date: 2015 Bibcode: 2015GCN.17665....1L