Chaotic behaviour in arrival times of cosmic-ray air showersW. Unno, S. Ohara, K. Urata, I. Masaki, T. Kitamura, T. Konishi, K. Tsuji, M. Chikawa and Y. KatoEurophys. Lett., 39 4 (1997) 465-468DOI: https://doi.org/10.1209/epl/i1997-00378-5