Homhual, Podjana, Sasiporn Metaweesuwan, Pramhathai Suksawang, and Amon Sirikhamhom. “Requirement Model of Rubber Trading on Android Operating System”. International Journal of Engineering and Technology 7, no. 4.19 (November 27, 2018): 302–304. Accessed August 17, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/22075.