Media type: E-Article Title: Constraining pion interactions at very high energies by cosmic ray data Contributor: Ostapchenko, Sergey; Bleicher, Marcus Published: American Physical Society (APS), 2016 Published in: Physical Review D, 93 (2016) 5 Language: English DOI: 10.1103/physrevd.93.051501 ISSN: 2470-0010; 2470-0029 Origination: Footnote: