Conical intersection dynamics of pyrimidine nucleosides tracked with sub-20-fs UV pulses Rocío Borrego-Varillas, Artur Nenov, Lucia Ganzer, Aurelio Oriana, Irene Conti, Ines Delfino, Cristian Manzoni, Marco Garavelli and Giulio Cerullo EPJ Web Conf., 205 (2019) 10007 Published online: 16 April 2019 DOI: 10.1051/epjconf/201920510007