Panich Intra และ Thanesvorn Siri-achawawath. (2019) Development of an online particulate monitoring systemfor measurement of the mass and number concentrationsand size distributions of ambient PM10, PM2.5and sub-400 nm particles. <i>Songklanakarin Journal of Science and Technology</i>, <i>41</i>(6), 1339-1347.Panich Intra และ Thanesvorn Siri-achawawath. "Development of an online particulate monitoring systemfor measurement of the mass and number concentrationsand size distributions of ambient PM10, PM2.5and sub-400 nm particles". Songklanakarin Journal of Science and Technology 41 (2019):1339-1347.Panich Intra และ Thanesvorn Siri-achawawath. Development of an online particulate monitoring systemfor measurement of the mass and number concentrationsand size distributions of ambient PM10, PM2.5and sub-400 nm particles. Research and Development Office, Prince of Songkla University:ม.ป.ท. 2019.