LongS. T., GioiP. V., and SuongN. T. “Some Factors Associated With Ovarian Disorders of Dairy Cattle in Northern Vietnam”. Tropical Animal Science Journal 44, no. 2 (June 1, 2021): 240-247. Accessed December 7, 2022. https://jma.journal.ipb.ac.id/index.php/tasj/article/view/31109.