@inproceedings{ratanavaraha2009travel,
  title={Travel Delay Cost due to Road Accident for Songkhla Province of Thailand},
  author={Ratanavaraha, Vatanavongs},
  booktitle={Proceedings of the Eastern Asia Society for Transportation Studies Vol. 7 (The 8th International Conference of Eastern Asia Society for Transportation Studies, 2009)},
  pages={403--403},
  year={2009},
  organization={Eastern Asia Society for Transportation Studies}
}