"室町泰徳,原田昇,太田勝敏","規制と取締りが交通の社会的費用に与える影響に関する研究",,"土木計画学研究・講演集",,"Vol. No.21(2)",,"pp. 113-116",1998,
"Muromachi Y.,Harata N.,Ohta K.","A Study on the Societal Cost of Transport : A Case Study of Sendai City in Japan","the 8th World Conference on Transport Research",,,,,,1998,
"Ohmori N.,Muromachi Y.,Harata N.,Ohta K.","A Study on Accessibility of Aged People Considering Daily Activity Pattern ?A Case Study in Akita City? (in Japanese)",,"Infrastructure Planning Review",,"Vol. No.15",,"pp. 671-678",1998,
"Takami K.,Muromachi Y.,Harata N.,Ohta K.","Argument on Land Use / Transportation Measures for Reducing Car Use and a Study on an Issue of Retail Location (in Japanese)",,"Infrastructure Planning Review",,"Vol. No.15",,"pp. 217-226",1998,
"Wicaksono A.,Muromachi Y.,Harata N.,Ohta K.","Boarding Place and Access Mode Choice Analysis of Intercity Bus Passenger : A Case Study of Probolinggo City Indonesia",,"Infrastructure Planning Review",,"  No.15",,"pp. 689-696",1998,
"Ohmori N.,Muromachi Y.,Harata N.,Ohta K.","Study on Possible Application of the GPS to Travel Behavior Surveys (in Japanese)",,"Proceedings of the Conference of Japan Society of Traffic Engineers",,"Vol. No.18",,"pp. 5-8",1998,