Comment on "Velocity slip coefficients based on the hard-sphere   Boltzmann equation" [Phys. Fluids 24, 022001 (2012)]
  We provide a comment on "Velocity slip coefficients based on the hard-sphere Boltzmann equation" by Livio Gibelli published in Phys. Fluids 24, 022001 (2012). 
Silvia Lorenzani
physics.flu-dyn