  The influence of high and low energy hadronic models on lateral distribution
functions of cosmic ray air showers for AUGER energies is explored. A large
variety of presently used high and low energy hadron interaction models are
analysed and the resulting lateral distribution functions are compared. We show
that the slope as well as the signal at 1000 m distance from the shower axis
depend on both the high and low energy hadronic model used. The models are
confronted with available hadron-nucleus data from accelerator experiments.
