GRB 180404B: Swift detection of a burst with an optical counterpart. Laporte, S. J. ; Gronwall, C. ; Gropp, J. D. ; Kennea, J. A. ; Lien, A. Y. ; Marshall, F. E. ; Palmer, D. M. ; Sakamoto, T. ; Tohuvavohu, A. Abstract Publication: GRB Coordinates Network Pub Date: 2018 Bibcode: 2018GCN.22590....1L