Indra, Dolly, Sarifuddin Madenda, and Eri Prasetyo Wibowo. “Recognition of Bisindo Alphabets Based on Chain Code Contour and Similarity of Euclidean Distance”. International Journal on Advanced Science, Engineering and Information Technology 7, no. 5 (October 26, 2017): 1644–1652. Accessed June 3, 2024. http://ijaseit.insightsociety.org/index.php/ijaseit/article/view/2746.