HABEN FESSEHA, MVSC, DVM. Umbilical Hernia in Cross Holstein Friesian Calf and its Surgical Management: A Case Report. Veterinary  Medicine, [S. l.], v. 5, n. 2, p. 39–42, 2020. DOI: 10.17140/VMOJ-5-147. Disponível em: https://openventio.us/index.php/VM/article/view/506. Acesso em: 12 nov. 2026.