Khosravimanesh, Shahrokh, Masoud Cheraghi Seifabad, Reza Mikaeil, and Raheb Bagherpour. “Experimental Study of the Effect of cooling/Lubricating Fluids on Penetration Rate in Hard and Soft Rock Drilling Process”. Rudarsko-geološko-naftni zbornik 36, no. 5 (November 24, 2021). Accessed May 5, 2024. https://hrcak.srce.hr/ojs/index.php/rgn/article/view/18227.