Tarigan, Apriyan Dwi Handoko, and R. Mahdalena Simanjorang. 2021. “Expert System Diagnosing Diseases in Rubber Plants Using the Dempster-Shafer Method”. Login : Jurnal Teknologi Komputer 15 (1), 25-32. http://login.seaninstitute.org/index.php/Login/article/view/82.