Rahman, M. M. ., S. Sultana, M. Z. . Ali, and M. Z. Hassan. “Prevalence of Umbilical Hernia of Calves and Its Risk Factors at Tangail Sadar of Bangladesh”. Asian-Australasian Journal of Bioscience and Biotechnology, vol. 2, no. 2, Aug. 2017, pp. 154-8, doi:10.3329/aajbb.v2i2.64381.