Postolov, Svetoslav, and Ivan Fasulkov. “APPLICATION OF COLOUR DOPPLER ULTRASONOGRAPHY FOR OVARIAN BLOOD FLOW EXAMINATION IN COWS – A REVIEW”. TRADITION AND MODERNITY IN VETERINARY MEDICINE 10, no. 1 (June 25, 2025): 85–94. Accessed June 4, 2026. https://scij-tmvm.com/index.php/pub/article/view/275.