Author(s): Ackermann M., Albert A., Anderson B., Atwood W.B., Baldini L., Barbiellini G., Bastieri D., Bechtol K., Bellazzini R., Bissaldi E., Blandford R.D., Bloom E.D., Bonino R., Bottacini E., Brandt T.J., Bregeon J., Bruel P., Buehler R., Caliandro G.A., Cameron R.A., Caputo R., Caragiulo M., Caraveo P.A., Cecchi C., Cohen-Tanugi J., Fegan S.J., Grenier I.A., Horan D., Nuss E., Piron F.

(Article) Published: Physical Review Letters, vol. 115 p.231301 (2015)
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