Itsuki Noda Masayuki Ohta Kousuke Shinoda Yoichiro Kumada Hideyuki Nakashima Evaluation of Usability of Dial-a-Ride Systems by Social Simulation. 167-181 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2927&spage=167 2003 conf/mabs/2003 MABS db/conf/mabs/mabs2003.html#NodaOSKN03