Pannucharoenwong, Nattadon. “Effect of Volume and Time Process With Hydrogen Adding on Viscosity of Yang Oil”. Indochina Applied Sciences 9, no. 3 (August 31, 2020): 547–556. accessed September 3, 2026. https://ph01.tci-thaijo.org/index.php/jmsae_ceae/article/view/240488.