M.Takeda, M.Chikawa, M.Fukushima, N.Hayashida, K.Honda, N.Inoue, K.Kadota, F.Kakimoto, K.Kamata, S.Kawaguchi, S.Kawakami, Y.Kawasaki, N.Kawasumi, E.Kusano, A.M.Mahrous, K.Mase, S.Mizobuchi, Y.Morizane, M.Nagano, H.Ohoka, S.Osone, N.Sakaki, N.Sakurai, M.Sasaki, M.Sasano, K.Shinozaki, M.Teshima, R.Torii, I.Tsushima, Y.Uchihori, T.Yamamoto, S.Yoshida, H.Yoshii,
& KADOTA, K 2001, '
Clusters of Cosmic Rays above 10$^{19}$eV observed with AGASA',
Proceedings of the 27th International Cosmic Ray Conference (Hamburg), vol. 1, pp. 341 - 344.