A. . Ćutuk, A. . Hrković-Porobija, E. . Šaljić, L. . Velić, B. Čengić, and F. . Tandir , Trans., “RELATION OF Ca, P AND Mg CONCENTRATIONS IN BLOOD PLASMA OF DAIRY COWS DURING DIFFERENT LENGTH OD OPEN DAYS PERIOD”, Radovi PPF, vol. 70, no. 1, pp. 110–117, Jun. 2026, doi: 10.67407/rppf.2020.1.110.