Man, N., Tien, P., Tuan, N., & Kien, N. (2006). DEPTH OF TRENCHS WITHOUT PROPPING - UP IN BUILDING UNDERGROUND WORKS ON UNSATURATED SOILS BY OPEN-METHOD. VNUHCM Journal of Science and Technology Development, 9(2), 81-88. https://doi.org/https://doi.org/10.32508/stdj.v9i2.2886