Nicolò Manaresi Gianni Medoro Melanie Abonnenc Vincent Auger Paul Vulto Aldo Romani Luigi Altomare Marco Tartagni Roberto Guerrieri http://arxiv.org/abs/0710.4665 2007 CoRR abs/0710.4665 db/journals/corr/corr0710.html#abs-0710-4665 informal publication