L. Schulz, D. Schulz, “Application of a slowly varying Envelope Function onto the Analysis of the Wigner Transport Equation, 2016”, IEEE Trans. Nanotechnology, vol. 15, no. 5, 2016.
D. Schulz, A. Mahmood, “Approximation of a Phase Space Operator for the Numerical Solution of the Wigner Equation”, IEEE J. Quantum Electron., vol. 52, no. 2, 2016.