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    {
      "rel": "cite-as",
      "href": "https://proceedings.esa.int/files/116.pdf"
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    {
      "rel": "cite-as",
      "href": "https://www.mdpi.com/2072-4292/13/18/3734"
    },
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      "rel": "license",
      "href": "https://creativecommons.org/licenses/by-nc/4.0/"
    },
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      "title": "Map of LOS vector (ENU coefficient)"
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      "name": "OPGC",
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