K. HondaN. KawasumiI. TsushimaK. HashimotoT. NishidaT. MatanoN. InoueA. OhsawaM. TamadaN. Ohmori2026-03-222026-03-22199710.1016/s0920-5632(96)00879-1https://doi.org/10.1016/s0920-5632(96)00879-1https://andeanlibrary.org/handle/123456789/62350enPhysicsCosmic rayShowerAir showerMonte Carlo methodAstrophysicsGamma rayUltra-high-energy cosmic rayNuclear physicsPrimary (astronomy)Study of primary cosmic ray composition from gamma ray families in air shower coresarticle