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Abstract:
Experimental data obtained by emulsion chambers at Pamir
and Chacaltaya are compared with simulation calculations
using CORSIKA program employing several models for high
energy hadronic interactions.
Although those models are considered to be based on modern
theory and are widely-accepted as standard simulation codes,
it is shown no models can explain many of characteristics,
hadron-gamma correlation, shower-clusters of small spread,
penetrating cascades and so on, observed in the experiments.