Ajdari Shabestari, A., Bayat, A., Mollaei, M. (2015). Tunneling in Weak Rocks, Khatam Al-Anbia Headquarters Publications, Iran, 662 pages.

Aksoy, C. O. (2008). Review of rock mass rating classification: historical developments, applications and restrictions, Journal of Mining Science, 1, 51-63.

Alejano, L. R. (2024). Rock Mass Classification Systems: A Useful Rock Mechanics Tool, Often Misused, Rock Mechanics and Rock Engineering, 1-21.

Bahadori, M., Khorasani, A. (2013). Stability analysis and proposal of a retention system in the water diversion tunnels of Mashampa Dam, Zanjan using numerical, experimental and convergence-adjacency methods, Journal of Tunnel and Underground Space Engineering, No. 2, pp. 217-231.

Bieniwaski, Z. (1989). Engineering rock mass classification, John Wiley & Sons, P 250.

Deere D. U. (1988). The rock quality designation (RQD) index in practice, ASTM STP 984, 91-101.

Faraj Elahi, H., Khosravi, M. H., Mohammadi, M. (2019). Review of the effectiveness of the rock quality index (RQD) in the geomechanical classification system of rock mass (case study of Alborz Tunnel), Journal of Tunnel and Underground Space Engineering, No. 1, pp. 137-148.

Farid, A. T. M. (2013). Modified Value of Rock Quality Designation Index RQD in Rock Formation, International Conference on Case Histories in Geotechnical Engineering, 1-7.

Ghafouri, M., Lashkaripour, G., Tariq Azali, S. (2008). Evaluation of geomechanical properties of rock mass in the Darongar Dam transfer tunnel route for the design of retaining system, Journal of the Iranian Society of Engineering Geology, No. 2, pp. 1-14.

Gonbadi, M. B., Urmiaei, A., Nikodel, M., Lashkaripour, G. (2009). Evaluation of the effectiveness of RMR classification in predicting the engineering behavior of the Shemshak Formation in underground excavations in the Siah Bisheh area, 6th Iranian Conference on Engineering and Environmental Geology, Tehran, pp. 753-764.

Kim, L., Rehman, H., Ali, W., Naji, A. M., Yoo, H. (2019). Weightage Effect during Back-Calculation of Rock-Mass Quality from the Installed Tunnel Support in Rock-Mass Rating and Tunneling Quality Index System, applied sciences, 1-17.

Laubscher, D. H. (1990). A geomechanics classification system for the rating of rock mass in mine design, Journal of South African Institute of Mining and Metallurgy, 10, 257-273.

Nouri Sartangi, M., Lashkaripour, G., Hafezi Moghaddis, N., Ghafouri, M., Sadeghi, M. (1400). Investigation of geomechanical parameters of material and rock mass of Asmari Formation (Case study: Khersan 3 Dam construction site), Quarterly Scientific Research Journal of Environmental Geology, No. 54, pp. 1-18.

Palmstrom, A. (2005). Measurements of and Correlations between Block Size and Rock Quality Designation (RQD), Published in Tunnels and Underground Space Technology, 20, 362-377.

Palmstrom, A. (2009). Combination the RMR, Q and RMi classification system, www.RocMass.net.

Pells, P. J. N., Bertuzzi, R. (2005). Limitation of rock mass classification system for tunnel support designs, 1-11.

Pells, P. L., Bieniawski, Z. T., Hencher, S. R., Pells, S. E. (2017). Rock quality designation (RQD): time to rest in peace, Canadian Geotechnical Journal, 54, 825-834.

 Russo, G. (2014). An update of the “multiple graph” approach for the preliminary assessment of the excavation behavior in rock tunneling, Tunneling and Underground Space Technology, 41, 74-81.

Sabzevari Dehkaboud, B., Fallah, A., Mashrafifar, M. R., Emami, A. A. (2018). Stability analysis and design of the water tunnel retaining system on the Mashhoureh Dam, Journal of the Iranian Society of Engineering Geology, No. 1 and 2, pp. 97-111.

Singh, B., Goel, R. K. (2011). Engineering Rock Mass Classification, Elsevier Inc, 382.

Somodi, G., Bar, N., Kovács, L., Arrieta, M., Török, A., Vásárhelyi, B. (2021). Study of Rock Mass Rating (RMR) and Geological Strength Index (GSI) Correlations in Granite, Siltstone, Sandstone and Quartzite Rock Masses, Applied Science, 11, 13.

Sonmez, H., Ercanoglu, M., Dagdelenler, G. (2021). A novel approach to structural anisotropy classification for jointed rock masses using theoretical rock quality designation formulation adjusted to joint spacing, Journal of Rock Mechanics and Geotechnical Engineering, 8, 329-345.

Thai, D. K., Nguyen, D. L., Pham, T. T. (2021). Safety Assessment of Underground Tunnel Subjected to Missile Impact Using Numerical Simulation, Computer and Concrete Journal, 1, 1-12.

Tong, Y., Yue, Y., Huang, Z., Li, Z., Zhu, L., Zhang, W. (2022). Modified RMR Rock Mass Classification System for Preliminary Selection of Potential Sites of High-Level Radioactive Waste Disposal Engineering, Sustainability, 14, 1-17.

Zhang, L. (2016). Determination and applications of rock quality designation (RQD), Journal of Rock Mechanics and Geotechnical Engineering, 8, 389-397.