"Quasidirect" observations of cosmic-ray primaries in the energy region 1012-1014 eV
Yasuhiro Kawamura, Hideya Matsutani, Hirotada Nanjyo, Katsuya Teraoka, Kimio Toda, Masakatsu Ichimura, Keisuke Kirii, Tadashi Kobayashi, Yasuo Niihori, Toru Shibata, Kazuo Shibuta, and Yasuko Yoshizumi