Poonyawatpornkul, Jiraporn, and Vilaiporn Luksameevanish. “Effect of Dragging Force on Paper Cone Falling Using High-Speed Video Analysis Technique”. RMUTP Research Journal Sciences and Technology 15, no. 2 (December 31, 2021): 146–157. Accessed May 2, 2024. https://ph02.tci-thaijo.org/index.php/RMUTP/article/view/243221.