Sojak, Mariusz, Szymon Głowacki, and Paweł Policewicz. “Methods of Data Transfer Protection in the Internet Network”. Studia Informatica. System and information technology 13, no. 2 (December 31, 2009): 85–96. Accessed May 7, 2024. https://czasopisma.uph.edu.pl/studiainformatica/article/view/2814.