1. An expert system for diagnosing plant diseases using certainty factor and backward chaining based on android. (July 2019) Authors: Tambunan, Angel Mariana; Siringoringo, Sari Ratnawati; Aruan, Rani; Aisyah, Putri Intan; Sitanggang, Delima Journal: Journal of physics Issue: Volume 1230(2019) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗