Dr. Maibam Chourjit Singh1, Dr. Chetan Maibam2, Dr. H. Jibonkumar3 and Athokpam Manoranjan Singh4. “Haematoma and Haemorrhage Injuries in Football”. International Journal of Economic Perspectives, vol. 15, no. 1, Dec. 2021, pp. 358-67, http://ijeponline.org/index.php/journal/article/view/81.