Mateus, Darwin, Ricardo Andrés García, Néstor Fernando Saavedra, and Zuly Calderón Carrillo. “Development of Experimental Correlations Between Indentation Parameters and Unconfined Compressive Strength (UCS) Values in Shale Samples”. CT&F - Ciencia, Tecnología y Futuro 3, no. 4 (December 31, 2008): 61–81. Accessed February 27, 2026. https://ctyfjournalecopetrolcomco.biteca.online/index.php/ctyf/article/view/463.