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