Onanong Sangphong และผู้แต่งคนอื่นๆ. (2018) Analysis and design of nomographs for minimum headway calculation. <i>Songklanakarin Journal of Science and Technology</i>, <i>40</i>(2), 457.Onanong Sangphong และผู้แต่งคนอื่นๆ. "Analysis and design of nomographs for minimum headway calculation". Songklanakarin Journal of Science and Technology 40 (2018):457.Onanong Sangphong และผู้แต่งคนอื่นๆ. Analysis and design of nomographs for minimum headway calculation. Research and Development Office, Prince of Songkla University:ม.ป.ท. 2018.