Dörstelmann, Maximiliane, Melinda Ari, Zsolt Becskei, Laszlo Gulyas, and András Gáspárdy. “Comparison of Service Period and Lactation Milk Yields in Dairy Cows With Single- and Twin-Calving”. Veterinarski Glasnik 72, no. 2 (November 16, 2018): 112–121. Accessed April 18, 2024. https://www.veterinarskiglasnik.rs/index.php/vg/article/view/88.