Sudden onset of log-periodicity and superdiffusion in non-Markovian random walks with amnestically induced persistence: exact resultsM. L. Felisberto, F. S. Passos, A. S. Ferreira, M. A.A. da Silva, J. C. Cressoni and G. M. ViswanathanEur. Phys. J. B, 72 3 (2009) 427-433DOI: https://doi.org/10.1140/epjb/e2009-00361-6