Concerning the Phase of the Time-Variation in the Cl-36 Decay Rate
  We show that apparently conflicting results on the time-variation of the measured Cl-36 decay rates can be readily understood as arising from solar variability beyond the simple Earth-Sun distance model, and hence are not an indication of instrumental effects. 
Ephraim Fischbach and J. Thomas Gruenwald and Daniel Javorsek, II and   Jere H. Jenkins and Robert H. Lee and Peter A. Sturrock
nucl-ex