Ivanova, Petya, and Todor Tagarev. "Challenges and Opportunities for Network Intrusion Detection in a Big Data Environment." In DIGILIENCE 2020., 2020.

Tagarev, Todor, Petya Ivanova, and Nataly Ivanova. Bulgaria: Information on Capabilities, Organisations, Policies, and Legislation in Crisis Management and Disaster Response In IT4Sec Reports. Sofia: Institute of Information and Communication Technologies, 2015.

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Tagarev, Todor, and Petya Ivanova. "Analytical support to foresighting EU roles as a Global Security Actor." Information & Security: An International Journal 29, no. 1 (2013): 21-33.

Tagarev, Todor, Venelin Georgiev, and Petya Ivanova. "Analytical Support to Critical Infrastructure Protection Policy and Investment Decision-Making." Information & Security: An International Journal 28, no. 1 (2012): 13-20.

Tagarev, Todor, Valeri Ratchev, Venelin Georgiev, Petya Ivanova, and Lozan Bizov. Methodology for Planning Wartime Defence Capabilities. Sofia: Centre for Security and Defence Management, IICT-BAS, 2012.

Tagarev, Todor, and Petya Ivanova. "Modelling Extreme Events for the Purposes of Security Foresight." Radioelectronic and Computer Systems, no. 59 (2012): 253-259.

Tagarev, Todor, Valeri Ratchev, and Petya Ivanova. Framework for Analysis of Potential EU Roles in the Comprehensive Approach In IT4Sec Reports. Sofia: Institute of Information and Communication Technologies, 2011.

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Ivanova, Petya. Technical Evaluation Report In Analytical Support to Defence Transformation. Paris: NATO RTA, 2010.

Tagarev, Todor, and Petya Ivanova. Classic, Modern, and Post-modern Approaches to Making Security Strategy In First International Seminar with Discussion on Security Policy . Vol. 7. Bulgaria, 2009.

Tagarev, Todor, and Petya Ivanova. Classic, Modern, and Post-Modern Approaches to Making Security Strategy In First International Seminar with Discussion on Security Policy (Security-2009). Bulgaria, 2009.

Tagarev, Todor, and Petya Ivanova. "Classic, Modern, and Post-Modern Approaches to Making Security Strategy." In First International Seminar with Discussion on Security Policy, 7-17. Varna, Bulgaria, 2009.

Tagarev, Todor, and Petya Ivanova. "CLASSIC, MODERN, AND POST-MODERN APPROACHES TO MAKING SECURITY STRATEGY.", 2009.

Tagarev, Todor, and Petya Ivanova. "Expanded Capability Portfolios to Steer Force Development under Strategic Uncertainty." In Specialist Meeting on Capability-Based Long Term Planning. Oslo, 2008.

Ivanova, Petya, and Todor Tagarev. "Multiagent Modelling of Critical Infrastructures." Military Journal 113 (2006): 97-115.

Ivanova, Petya. "Securing Cyberspace." Information & Security: An International Journal 18 (2006): 5-10.

Tagarev, Todor, and Petya Ivanova. "Developing an Architecture for Naval Sovereignty Operations Center." Information & Security: An International Journal 16 (2005): 29-37.

Ivanova, Petya, and Todor Tagarev. "Indicator Space Configuration for Early Warning of Violent Political Conflicts by Genetic Algorithms." Annals of Operations Research 97 (2000): 287-311.

Tagarev, Todor, and Petya Ivanova. "Computational Intelligence in Multi-Source Data and Information Fusion." Information & Security: An International Journal 2 (1999): 33-49.

Ivanova, Petya, Andrew Hunter, and Todor Tagarev. "Selection of Indicators for Early Warning of Violent Political Conflicts by Genetic Algorithms." In International Conference on Transition to Advanced Market Institutions and Economies. Warsaw, Poland, 1997.

Tagarev, Todor, Petya Ivanova, and Alfredo Moscardini. Soft - Computing Methods for Early Warning of Violent Conflicts In 1996 AFCEA-Europe Sofia Seminar. Sofia, Bulgaria, 1996.

Ivanova, Petya. Feature Selection for Neural Network Forecaster by Genetic Algorithms In 12th International Conference on Systems Science. Vol. 3. Wrozlaw, Poland, 1995.