Sub-TeV hadronic interaction model differences and their impact on air showers Á. Pastor-Gutiérrez, H. Schoorlemmer, R. D. Parsons and M. Schmelling Eur. Phys. J. C, 81 4 (2021) 369 Published online: 28 April 2021 DOI: 10.1140/epjc/s10052-021-09160-2