Influence of oligomeric surfactants on the strength of hard rock formations: Experimental Insights and implicationsShokirjon Sh. Sunnatulloev, Shukurullo U. Buriev, Lazizjon O. Sharipov and Abdunor B. ZhiyanovE3S Web Conf., 548 (2024) 01027DOI: https://doi.org/10.1051/e3sconf/202454801027