Fluri, Philipp, and Todor Tagarev. "The Concept of Resilience: Security Implications and Implementation Challenges." Connections: The Quarterly Journal 19, no. 3 (2020): 5-12.

Tagarev, Todor, Salvatore Marco Pappalardo, and Nikolai Stoianov. "A Logical Model for Multi-Sector Cyber Risk Management." Information & Security: An International Journal 47, no. 1 (2020): 13-26.

Tagarev, Todor, Venelin Georgiev, and Valeri Ratchev. "A Taxonomy of Essential Services." Radioelectronic and Computer Systems, no. 58 (2012): 191-196.