Songkitti, Worawat, Sirasak Pong-a-mas, Chalermpon Plengsa-ard, and Ekathai Wirojsakunchai. “Influence of Factors on Non-Exhaust PM Emissions from Motorcycle”. Engineering and Technology Horizons 39, no. 1 (March 29, 2022): 45–53. Accessed May 18, 2024. https://ph01.tci-thaijo.org/index.php/lej/article/view/245959.