Exciton-Exciton Annihilation as a Mechanism for Uphill Transfer in a Molecular Excitonic SystemCraig N. Lincoln, Matthias Block, Bastian Baudisch, Pavel Malevich, Hans von Berlepsch, Eberhard Riedle and Jürgen HauerEPJ Web Conf., 205 (2019) 06017DOI: https://doi.org/10.1051/epjconf/201920506017