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2003 · Yves Décanini, Antoine Folacci, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 49
1992 · Bruce P. Jensen, John G. Mc Laughlin, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 49
1991 · B. P. Jensen, J. G. McLaughlin, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 31