article{Voorhees:2009vk, author = {Voorhees, Burton and Levy, Moshe and Macal, Charles M and North, Michael J and Parry, Hazel R and Laubenbacher, Reinhard and Jarrah, Abdul S and Mortveit, Henning S and Ravi, S S and Bandini, Stefania and Manzoni, Sara and Vizzari, Giuseppe and Castiglione, Filippo and Torra, Vicen{c c} and Cervelle, Julien and Formenti, Enrico and Abelson, Hal .