@article{paperid:1004887,
author = {Ayati, Esmaeel and مهدی شهیدیان},
title = {Safety and cost-effectiveness of clear zones on Iran},
journal = {Proceedings of the ICE - Transport},
year = {2007},
month = {February},
issn = {0965-092X},
keywords = {Safety; Cost; Traffic; Roadside; Iran},
}