Kropyvka, Yu. G., and V. S. Bomko. “EFFECTIVENESS OF USING MIXED-LIGAND COMPLEXES OF ZINC, MANGANESE AND COBALT IN FEEDING HIGHLY PRODUCTIVE COWS IN THE EARLY DRY PERIOD”. Scientific Progress & Innovations, no. 3 (September 24, 2021): 118–126. Accessed October 14, 2025. https://journals.pdau.edu.ua/visnyk/article/view/1541.