Humaira, Fitrah, Tengku Musri, Sarimuddin Sarimuddin, Dwi Alham, and Aurista Ilmah. “Analisis Robustness Teks Captcha Paypal HIP Menggunakan Template Matching”. Journal of Applied Informatics and Computing 2, no. 2 (December 5, 2018): 29-33. Accessed April 26, 2024. https://jurnal.polibatam.ac.id/index.php/JAIC/article/view/1039.