Relation between the Vlasov and Wigner qusirelativistic equations at different quantizations

Wigner equation in classical limit (ℎ→0) goes to the Vlasov kinetic equation. It is shown that the above analogy is valid in post-newton approximation taking account of C-2 order corrections to Newton mechanics. Therewith post-Newton Wigner equation depending on quantization method has different terms conforming to interaction delay