Rajapashe, M. ., M. . Adnan, A. . Dissanayaka, D. . Guneratne, and K. Abeywardena. “Multi-Format Document Verification System”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 74, no. 2, Dec. 2020, pp. 48-60, https://www.asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/6454.