DUNHAM, J. W. Pile foundations for buildings. Proc. ASCE, Soil Mechanics and Foundation Division. 1954
GIBBS, H. J. Research on determining the density of sand by spoon penetration test. Proc. 4th ICSMFE. 1957, 1, 35-39
HATANAKA, M. Correlation between the liquefaction strength of saturated sands obtained by in-situ freezing method and rotary-type triple tube method. Soils and Foundations. 1995, 35, 2, 67-75
IAI, S. Pore water pressures and ground motions measured during the 1987 Chiba-Toho-Oki earthquake. Note of the Port and Harbour Research Institute. 1991, 718, 1-18