KORAH, G. ., and D. S. M. . KUMAR. “Black Pepper Price and Its Determinants: A Panel Data Analysis Using Different Estimators”. The Journal of Contemporary Issues in Business and Government, vol. 27, no. 3, June 2021, pp. 382-7, https://cibgp.com/au/index.php/1323-6903/article/view/1611.