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1993 · A. L. Matacz, P. C. W. Davies, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 42
1997 · Don Koks, Andrew Matacz, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 9