GRB 130508A: Mitsume akeno upper limits. Saito, Y. ; Yano, Y. ; Usui, R. ; Tachibana, Y. ; Ito, K. ; Yoshii, T. ; Kurita, S. ; Yatsu, Y. ; Kawai, N. Abstract Publication: GRB Coordinates Network Pub Date: 2013 Bibcode: 2013GCN.14618....1S