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The Spin-Foam Approach to Quantum Gravity

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PHYSICAL REVIEW D (2003)

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Spin networks for noncompact groups

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SU(2) loop quantum gravity seen from covariant theory -: art. no. 044009

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PHYSICAL REVIEW D (2002)

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Existence of local covariant time ordered products of quantum fields in curved spacetime

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COMMUNICATIONS IN MATHEMATICAL PHYSICS (2002)

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