HATVANI, Csilla. Ultrasound machine:possibility and solution for dairy farms in reproduction management. Acta Agraria Kaposváriensis, [S. l.], v. 14, n. 1, p. 1–8, 2010. Disponível em: https://journal.uni-mate.hu/index.php/aak/article/view/1935. Acesso em: 5 dec. 2025.