S. Mustafa, R. Rafailov, K. Kanchev, E. Ivanova, and P. Petrova, “OVOSCOPIC DETECTION OF PARASITOLOGICAL FINDINGS IN CAPTIVE SNAKES FROM BULGARIA: A 2025 SURVEY”, Tradit. Mod. Vet. Med., vol. 11, no. 2, pp. 54–59, Jul. 2026.