Kumar, A., R. Soni, I. T. Hawaldar, M. Vyas, and V. Yadav. “The Testing of Efficient Market Hypotheses: A Study of Indian Pharmaceutical Industry”. International Journal of Economics and Financial Issues, vol. 10, no. 3, May 2020, pp. 208-16, https://econjournals.com/index.php/ijefi/article/view/9764.