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    "license_notice": {
      "const": "Translated from Russian. Original: Avo Kogerman, Kadri Ammon, Koit Lääts, Igor Kudrjavtsev, Aare Kuusik, “Синтез аналогов ювенильного гормона 11. синтез некоторых новых диалкоксиметанов”, Proceedings of the Estonian Academy of Sciences. Chemistry, 1991, vol. 40 no. 4, pp. 205–208, https://doi.org/10.3176/chem.1991.4.04. Published by Estonian Academy Publishers; license CC BY 4.0 (http://creativecommons.org/licenses/by/4.0/) as deposited with Crossref by the publisher (the publisher's policy page names CC BY-NC 4.0). Changes: translated into English.",
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      "description": "The complete translation in Markdown with LaTeX math, a marker <!-- source-page: 001 -->, <!-- source-page: 002 -->, … for every page of the scan."
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