Nikolic, Nebojsa. "Connecting Conflict Concepts: Hybrid Warfare and Warden?s Rings." Information & Security: An International Journal 41 (2018): 21-34.

Nikolic, Nebojsa. "Obstacles in Inter-Organizational Cooperation and Hybrid Threats." Information & Security: An International Journal 39, no. 1 (2018): 29-41.