Vasileva, Madlen, and Ilian Kostov. 2022. “Scientific Evaluation of the Effectiveness of Vaccination of Target Animals (Cattle, Sheep and Goats) As a Measure to Control and Eradicate Q Fever Disease”. TRADITION AND MODERNITY IN VETERINARY MEDICINE 7 (1):60-65. https://doi.org/10.5281/zenodo.6376297.