Jansone, Anita, Kaspars Lauris, and Ivars Šaudinis. “Multi Factor Authentication As a Necessary Solution in the Fight With Information Technology Security Threats”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June 16, 2015): 114–120. Accessed April 28, 2024. https://journals.rta.lv/index.php/ETR/article/view/183.