Reyes, A. R. L., Festijo, E. D. and Medina, R. P. (2019) “Enhanced Multi-factor Out-of-Band Authentication En Route to Securing SMS-based OTP Ariel”, International Journal of Engineering and Technology Innovation, 9(2), pp. 145–154. Available at: https://ojs.imeti.org/index.php/IJETI/article/view/3394 (Accessed: 19 April 2024).