Akalu, M. ., B. . Murthy, T. . Abayeneh, and E. . Gelaye. “Major Bacterial Pathogens of Bovine Respiratory Disease and Lung Lesions in Calves from Selected Areas of Ethiopia”. The Thai Journal of Veterinary Medicine, vol. 51, no. 3, May 2021, pp. 501-8, https://he01.tci-thaijo.org/index.php/tjvm/article/view/250766.