  A freezing density scaling of transport properties of the Lennard-Jones fluid
is rationalized in terms of the Rosenfeld's excess entropy scaling and isomorph
theory of Roskilde-simple systems. Then, it is demonstrated that the freezing
density scaling operates reasonably well for viscosity and thermal conductivity
coefficients of liquid argon, krypton, and xenon. Quasi-universality of the
reduced transport coefficients at their minima and at freezing conditions is
discussed. The magnitude of the thermal conductivity coefficient at the
freezing point is shown to agree remarkably well with the prediction of the
vibrational model of heat transfer in dense fluids.
