Wibawa, H. A. ., S. Sutikno, and P. S. . Sasongko. “Optic Disc Detection on Retina Image Using Extreme Learning Machine”. Sinkron : Jurnal Dan Penelitian Teknik Informatika, vol. 7, no. 2, Apr. 2023, pp. 1064-73, doi:10.33395/sinkron.v8i2.12123.