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M. Kato, T. Fujii, and S. Et-onaka, Effects of shape and volume fraction of second phase on stress states in two-phase materials, Materials Science and Engineering: A, vol.285, issue.1-2, pp.144-150, 2000.
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B. Nedjar, An augmented lagragian treatment of continuum damage problems involving the gradient of damage, Proc. WCCM V, Fifth World Comngress on Computational Mechanics

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