{
  "source_id": "10.3176/phys.math.1990.4.02",
  "archive": "Estonian Academy Publishers archive (kirj.ee)",
  "publisher": "Estonian Academy Publishers",
  "journal": "Proceedings of the Estonian Academy of Sciences. Physics. Mathematics",
  "journal_original": null,
  "year": 1990,
  "volume": "39",
  "issue": "4",
  "pages": "325–334",
  "first_page": 325,
  "last_page": 334,
  "title": "ОБ ЕДИНСТВЕННОСТИ РЕШЕНИЯ ОБРАТНОЙ ЗАДАЧИ ВОССТАНОВЛЕНИЯ КОЭФФИЦИЕНТА ФИЛЬТРАЦИИ, ПОСТОЯАННОВО ПО ОДНОЙ ПЕРЕМЕННОЙ",
  "title_en": null,
  "authors": [
    "Jaan Janno"
  ],
  "language": "Russian",
  "language_evidence": "crossref language=ru + Cyrillic (Russian) title",
  "doi": "10.3176/phys.math.1990.4.02",
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  "license": "CC BY 4.0",
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  "license_evidence": "crossref license field (publisher policy page says CC BY-NC 4.0; see notes)",
  "license_notice": "Translated from Russian. Original: Jaan Janno, “Об единственности решения обратной задачи восстановления коэффициента фильтрации, постояанново по одной переменной”, Proceedings of the Estonian Academy of Sciences. Physics. Mathematics, 1990, vol. 39 no. 4, pp. 325–334, https://doi.org/10.3176/phys.math.1990.4.02. 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"
}