Barczak, Andrzej, and Grzegorz Tokajuk. “Intrusion Detection Systems. Model and Implementation of a Knowledge Base of Intrusions into the Computer System”. Studia Informatica. System and Information Technology, vol. 14, no. 1-2, May 2019, pp. 13-22, https://czasopisma.uws.edu.pl/studiainformatica/article/view/536.