Comment on "Atomic jumps in quasiperiodic   Al$_{72.6}$Ni$_{10.5}$Co$_{16.9}$ and related crystalline material"
  We disagree with a number of statements by Dolinsek et al. about the specificity of phason dynamics in quasicrystals (QCs). 
G. Coddens (Laboratoire des Solides Irradies)