Retardation in electron dynamics simulations based on time-dependent density functional theory Xiaojing Wu, Aurelio Alvarez-Ibarra, Dennis R. Salahub and Aurélien de la Lande Eur. Phys. J. D, 72 12 (2018) 206 Published online: 04 December 2018 DOI: 10.1140/epjd/e2018-90219-3