Alverson G, Baker WF, Ballocchi G, et al. Direct photon production at high pT in pi -Be and pBe collisions at 500 GeV/c. Phys Rev Lett. 1992;68(17):2584-2587doi: 10.1103/PhysRevLett.68.2584.

Alverson, G., Baker, W. F., Ballocchi, G., Benson, R., Berg, D., Blusk, S., Bromberg, C., Brown, D., Carey, D., Chand, T., Chandlee, C., Choudhary, B. C., Chung, W. H., de Barbaro L, DeSoi, W., Dlugosz, W., Dunlea, J., Easo, S., Engels, E., Faissler, W., Fanourakis, G., Ferbel, T., Garelick, D., Ginther, G., Glass, G., Glaubman, M., Gutierrez, P., Hartman, K., Huston, J., Johnstone, C., Kapoor, V., Kourbanis, I., Lanaro, A., Lirakis, C., Lobkowicz, F., Lukens, P., Mani, S., Mansour, J., Maul, A., Miller, R., Nelson, C. A., Oh, B., Orris, D., Pothier, E., Prebys, E., Rajaram, B. M., Roser, R., Ruddick, K., Shepard, P., Shivpuri, R. K., Sinanidis, A., Skow, D., Slattery, P., Sorrell, L., Toothacker, W., Varelas, N., Weerasundara, D., Whitmore, J., Wu, G., Yasuda, T., Yosef, C., & Zielinski, M. (1992). Direct photon production at high pT in pi -Be and pBe collisions at 500 GeV/c. Physical review letters, 68(17), 2584-2587. https://doi.org/10.1103/PhysRevLett.68.2584

Alverson, et al. "Direct photon production at high pT in pi -Be and pBe collisions at 500 GeV/c." Physical review letters vol. 68,17 (1992): 2584-2587. doi: https://doi.org/10.1103/PhysRevLett.68.2584