2) Chaney, R. and Mulilis, J.P. (1978): "Suggested method for soil specimen remolding by wet-raining," Geotechnical Testing Journal, ASTM, Vol.1, No.2, pp.107-108.
3) Committee of JSSMFE on the Test Method of Relative Density of Sand (1979): "Maximum-minimum density test method of sand," Procedures for Testing Soils, 2nd Revised Edition, JSSMFE, Part 2, Chapter 9, pp.172-188 (in Japanese).