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    "abstract": "Two arguments which show the validity of the concept of gravitational energy\nput forward by Lorentz and Levi-Civita.",
    "arxiv_id": "physics/0105010",
    "authors": [
      "A. Loinger"
    ],
    "categories": [
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    "title": "Stresses, energy flow and energy density of gravitational nature",
    "url": "https://arxiv.org/abs/physics/0105010"
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