GRB140430A: Swift detection of a burst with an optical counterpart. Siegel, M. H. ; Baumgartner, W. H. ; Chester, M. M. ; D'Elia, V. ; Holland, S. T. ; Kennea, J. A. ; Kuin, N. P. M. ; Markwardt, C. B. ; Marshall, F. E. ; Ukwatta, T. N. Abstract Publication: GRB Coordinates Network Pub Date: 2014 Bibcode: 2014GCN.16190....1S