Experimental hydraulic fracturing of Berea sandstone under triaxial stress stateHazem Mubarak, Roshan Saji, Goulong Zhu, Rita Sousa, Mohamed Sassi and Rashid K. Abu Al-RubE3S Web Conf., 205 (2020) 03014DOI: https://doi.org/10.1051/e3sconf/202020503014