Dao, T. X., Son, N. T. and Vinh, N. T. (2015) “New approach to drill bit performance evaluation with "Mechanical Specific Energy-MSE"”, Petrovietnam Journal, 20, pp. 8-13. Available at: https://www.pvj.vn/index.php/TCDK/article/view/423 (Accessed: 20April2026).