Hasin, Dilruba, et al. “Effect of Melatonin on Blood Electrolytes, Biochemical Profiles and SOD Activity of Beetal and Assam Hill Goat Exposed to Direct Sunshine During Summer in Assam”. International Journal of Livestock Research, vol. 9, no. 5, May 2019, pp. 265-74, http://ijlr.org/ojs_journal/index.php/ijlr/article/view/1288.