G.H. Giloyan, L.G. Ter-Isahakyan, N.A. Kasumyan. “Raising Heifers of Holstein and Fleckvieh Cattle Breed through Winter Grazing in the RA Armavir Region”. AgriScience and Technology, vol. 1, no. 81, July 2023, https://journal.anau.am/index.php/anau/article/view/69.