Kropyvka, Yu. G., et al. “HIGH-YIELDING COWS PERFORMANCE AND ELEMENTS METABOLISM IN THE SECOND 100 DAYS OF LACTATION UNDER THE USING OF ZINC, MANGANESE AND COBALT MIXED LIGAND COMPLEXES”. Scientific Progress & Innovations, no. 1, Mar. 2021, pp. 217-25, doi:10.31210/visnyk2021.01.27.