Design, upgrade and characterization of the silicon photomultiplier front-end for the AMIGA detector at the Pierre Auger Observatory by Aab, A., Abreu, P., Aglietta, M., Albury, J. M., Allekotte, Ingomar, Almela, A., Alvarez Muñiz, J., Alves Batista, R., Anastasi, G. A., Anchordoqui, Luis A., Andrada, Betiana Eugenia, Andringa, S., Aramo, C., Araújo Ferreira, P. R., Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Barreira Luz, R. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, Xavier Pierre Louis, Biermann, P. L., Bister, T., Gollan Scilipotti, Fernando Daniel

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Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory by Aab, A., Abreu, P., Aglietta, M., Al Samarai, I., Albuquerque, I. F. M., Allekotte, Ingomar, Almela, Daniel Alejandro, Alvarez Castillo, J., Alvarez Muñiz, J., Anastasi, G. A., Anchordoqui, Luis A., Andrada, Betiana Eugenia, Andringa, S., Aramo, C., Arqueros, F., Arsene, N., Asorey, Hernán Gonzalo, Assis, P., Aublin, J., Avila, G., Badescu, A. M., Balaceanu, A., Luz Barreira, R. J., Beatty, J. J., Figueira, Juan Manuel, Platino, Manuel, Wundheiler, Brian, Wahlberg, Hernan Pablo, Mollerach, Maria Silvia, Biermann, P. L.

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