International Symposium on Technological, Energy and Environmental Topics in Transport "Externalities in the Urban Transport: Assessing and Reducing the Impacts" (1998 : Milan, Italy)
"This paper was presented at the International Symposium on Technological, Energy and Envivonmental Topics in Transport, 'Externalities in the Urban Transport: Assessing and Reducing the Impacts' organised by Fondazione Eni Enrico Mattei and Scuola Superiore Enrico Mattei, Milan, October 27-29, 1998."