Muljono, Muljono, et al. “Developing BacaBicara: An Indonesian Lipreading System As an Independent Communication Learning for the Deaf and Hard-of-Hearing”. International Journal of Emerging Technologies in Learning (iJET), vol. 14, no. 04, Feb. 2019, pp. pp. 44-57, doi:10.3991/ijet.v14i04.9578.