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2. 2) Architectural Institute of Japan, AIJ, 2006. Recommendations for Design of Ground Improvement for Building Foundations, RDGIBF, 363-364. (in Japanese)
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5. 5) Harada, K. (2021): Changes and findings of research on improvement effect of SCP (Sand Compaction Pile) method, Foundation Engineering (Kiso-ko), Vol. 49, 48-51. (in Japanese)