Balamurugan, P., S. Ezhil Valavan, and N. K. Sudeep Kumar. 2019. “Constraints Faced by Native Chicken Farmers in Tamil Nadu Under Intensive Management System”. International Journal of Livestock Research 9 (9). India:157-60. http://ijlr.org/ojs_journal/index.php/ijlr/article/view/1128.