TY - JOUR AU - Arqueros Martínez, Fernando AU - García Pinto, Diego AU - otros, ... PY - 2016 DO - 10.1016/j.physletb.2016.09.039 SN - 0370-2693 UR - https://hdl.handle.net/20.500.14352/17796 T2 - Physics letters B AB - We report a first measurement for ultrahigh energy cosmic rays of the correlation between the depth of shower maximum and the signal in the water Cherenkov stations of air-showers registered simultaneously by the fluorescence and the surface detectors... LA - eng M2 - 288 PB - Elsevier Science BV KW - Showers KW - Trigger KW - Energy. TI - Evidence for a mixed mass composition at the 'ankle' in the cosmic-ray spectrum TY - journal article VL - 762 ER -