Elksne, Maija, and Pēteris Grabusts. “ELECTRONIC PAYMENT SAFETY PROVIDE OPTIONS”. HUMAN. ENVIRONMENT. TECHNOLOGIES. Proceedings of the Students International Scientific and Practical Conference, no. 21 (April 19, 2017): 83–88. Accessed April 30, 2024. https://journals.rta.lv/index.php/HET/article/view/3587.