@Incollection{alfi07howpeople,
  author = {Alfi, V. and Parisi, G. and Pietronero, L.},
  title  = {How People React to a Deadline: The Distribution of Registrations of Statphys 23},

  year   = {2007},
  number = {},
  url    = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=1122},

  const  = {\ text}
}