http://dx.doi.org/10.1103/PhysRevB.88.235106 (Publisher version)
http://arxiv.org/abs/1306.6315 (Preprint)
PhysRevB.88.235106.pdf (Publisher version), 2MB
Gramsch, C., Balzer, K., Eckstein, M., & Kollar, M. (2013). Hamiltonian-based impurity solver for nonequilibrium dynamical mean-field theory. Physical Review B, 88(23): 235106. doi:10.1103/PhysRevB.88.235106.