KUÇI, Gurakuç. Serbia as a Hub for Russian Hybrid Operations in Europe: Five Documented Cases. Octopus Journal: Hybrid Warfare & Strategic Conflicts, Kosovo, v. 4, 2025. DOI: 10.69921/8212025. Disponível em: https://octopusinstitute.org/ojs/index.php/octopus-journal/article/view/33.. Acesso em: 6 sep. 2025.