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2. Membrane penetration in triaxial tests;Bohac;Geotechnical Testing Journal, GTJODJ,1992
3. An experimental method for determining membrane penetration;Choi;Geotechnical Testing Journal, GTJODJ,1992
4. Membrane compliance and liquefaction of sluiced gravel specimens;Evans;Proc., ASCE,1992
5. Discussion of the paper by Kiekbusch and Schuppener;Flavigny;Proc., ASCE,1979