Observation of Gamma-Ray Emission from the Galaxy M87 above 250 GeV with VERITASDOI: info:10.1086/587458v. 679397–403
Acciari, V. A., Beilicke, M., Blaylock, G., Bradbury, S. M., Buckley, J. H., Bugaev, V., Butt, Yousaf M., Celik, O., Cesarini, A., Ciupik, L., Cogan, P., Colin, P., Cui, W., Daniel, M. K., Duke, C., Ergin, T., Falcone, Abraham, Fegan, S. J., Finley, J. P., Finnegan, G., Fortin, P., Fortson, L. F., Gibbs, K., Gillanders, G. H., Grube, J. et al. 2008. "Observation of Gamma-Ray Emission from the Galaxy M87 above 250 GeV with VERITAS." The Astrophysical Journal, 679 397–403. https://doi.org/10.1086/587458.