Alfi, V. and Parisi, G. and Pietronero, L.. How People React to a Deadline: The Distribution of Registrations of Statphys 23. Abstract Book of the XXIII IUPAP International Conference on Statistical Physics. editor(s) Pietronero, Luciano and Loreto, Vittorio and Zapperi, Stefano. Genova, Italy, Year 2007.