Temporal signatures of the Cherenkov light induced by extensive air   showers of cosmic rays detected with the Yakutsk array
  We analyze temporal characteristics of signals from the wide field-of-view (WFOV) Cherenkov telescope (CT) detecting extensive air showers (EAS) of cosmic rays (CR) in coincidence with surface detectors of the Yakutsk array. Our aim is to reveal causal relationships between measured characteristics and physical properties of EAS. 
A.A. Ivanov and L.V. Timofeev
astro-ph.IM