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1999 · Hatem Widyan, A. Mukherjee, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 7
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2000 · Hatem Widyan, A. Mukherjee, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 2