Kumar, Vineet, et al. “Ultrasonographic, Radiographic Diagnosis and Management of Esophageal Obstruction in Jaffarabadi Buffaloes and Gir Cattle”. Buffalo Bulletin, vol. 35, no. 4, Dec. 2016, pp. 549-56, https://kuojs.lib.ku.ac.th/index.php/BufBu/article/view/1325.