Zieliński , Zbigniew, Jan Chudzikiewicz, Janusz Furtak, Andrzej Stasiak, and Marek Brudka. 2012. “Secured Workstation to Process the Data of Different Classification Levels”. Journal of Telecommunications and Information Technology 49 (3): 5-12. https://doi.org/10.26636/jtit.2012.3.1273.