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8Roscoe K H, Schofield A N, Thurairajah A. Yielding of clays in states wetter than critical[ J]. Geoteehnique, 1958, 13 (3) : 211 - 240.
9Schofield A N, Wroth C P. Critical State Soil Mechanics[M]. London: McGraw Hill, 1968.
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