Pozo, Raul. “Comparative Analysis of Different Calculation Methods of the Geological Strength Index (GSI) Based on Qualitative and Quantitative Approaches”. Rudarsko-geološko-naftni zbornik 37, no. 3 (May 31, 2022): 121–138. Accessed December 19, 2024. https://hrcak.srce.hr/ojs/index.php/rgn/article/view/21103.