A v0-representability issue in lattice ensemble-DFT and its signature in lattice TDDFT Thomas Rössler, Claudio Verdozzi and Carl-Olof Almbladh Eur. Phys. J. B, 91 10 (2018) 219 Published online: 01 October 2018 DOI: 10.1140/epjb/e2018-90205-7