Cherubini, Claudia, and Concetta I. Giasi. “The Evaluation Of Deformability Modulus By Rock Mass Classification Systems: A Comparative Study”. Journal of Civil Engineering Research and Practice 2, no. 1 (May 12, 2005). Accessed October 10, 2026. https://www.ajol.info/index.php/jcerp/article/view/29138.