Author(s): Ackermann M., Ajello M., Albert A., Atwood W.B., Baldini L., Ballet J., Barbiellini G., Bastieri D., Becerra Gonzalez J., Bellazzini R., Bissaldi E., Blandford R.D., Bloom E.D., Bonino R., Bottacini E., Bregeon J., Bruel P., Buehler R., Buson S., Caliandro G.A., Cameron R.A., Caputo R., Caragiulo M., Cohen-Tanugi J., Fegan S.J., Grenier I.A., Horan D., Lott B., Nuss E., Piron F.

(Article) Published: The Astrophysical Journal / The Astrophysical Journal Letters, vol. 813 p.L41 (2015)
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