Understanding individual and collective mobility patterns from smart card records: A case study in Shenzhen. - Liang Liu; Anyang Hou; Assaf Biderman; Carlo Ratti; Jun Chen (ITSC, 2009)

Space and time-dependant bus accessibility: A case study in Rome. - Fabio Pinelli; Anyang Hou; Francesco Calabrese; Mirco Nanni; Chris Zegras; Carlo Ratti (ITSC, 2009)