{
  "source_id": "10.3176/phys.math.1980.3.16",
  "archive": "Estonian Academy Publishers archive (kirj.ee)",
  "publisher": "Estonian Academy Publishers",
  "journal": "Proceedings of the Academy of Sciences of the Estonian SSR. Physics. Mathematics",
  "journal_original": "Известия Академии наук Эстонской ССР. Физика. Математика",
  "year": 1980,
  "volume": "29",
  "issue": "3",
  "pages": "336–338",
  "first_page": 336,
  "last_page": 338,
  "title": "К ТЕОРИИ ОДНОМЕРНЫХ ВОЛНОВЫХ УРАВНЕНИЙ",
  "title_en": null,
  "authors": [
    "Paul Kard"
  ],
  "language": "Russian",
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  "doi": "10.3176/phys.math.1980.3.16",
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  "license": "CC BY 4.0",
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  "license_notice": "Translated from Russian. Original: Paul Kard, “К теории одномерных волновых уравнений”, Proceedings of the Academy of Sciences of the Estonian SSR. Physics. Mathematics, 1980, vol. 29 no. 3, pp. 336–338, https://doi.org/10.3176/phys.math.1980.3.16. 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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  "record_source": "harvested 2026-10-14 from the publisher's API"
}