The approach based on the Wigner function is considered as a viable model of quantum transport which allows. in analogy with the semiclassical Boltzmann equation. to restore a description in the phase-space. A crucial point is the determination of the Wigner function at the equilibrium which stems from the equilibrium density function. https://www.bekindtopets.com/super-value-Keychron-M4-Wireless-4K-Mouse-flash-choice/