A comparative study of critical failure surface in unsaturated soil slopesAbderrahim Mihoubi, Abdelkader Houam, Samir Benmoussa, Mohamed Salah Laouar, Ali Fernane, Salah Messast and Saida GueraidiaMATEC Web Conf., 394 (2024) 01005DOI: https://doi.org/10.1051/matecconf/202439401005