Physical model experiment of rainfall-induced instability of a two-layer slope: implications for early warning - Shiqiang, Bian; Chen, Guan; Meng, Xingmin; Yang, Yunpeng; Wu, Jie; Huang, Fengchun; Wu, Bing; Jin, Jiacheng; Qiao, Feiyu; Chong, Yan; Cheng, Donglin (Landslides: Journal of the International Consortium on Landslides, 2024)