{
  "source_id": "10.3176/oil.1991.4.03",
  "archive": "Estonian Academy Publishers archive (kirj.ee)",
  "publisher": "Estonian Academy Publishers",
  "journal": "Oil Shale",
  "journal_original": "Горючие сланцы",
  "year": 1991,
  "volume": "8",
  "issue": "4",
  "pages": "316–323",
  "first_page": 316,
  "last_page": 323,
  "title": "ЭКСПРЕСС-ДИАГНОСТИКА ПРОЧНОСТНЫХ СВОЙСТВ ГОРНЫХ ПОРОД",
  "title_en": null,
  "authors": [
    "A. Rulkov",
    "Aleksandr Levin",
    "V. Terras"
  ],
  "language": "Russian",
  "language_evidence": "Cyrillic (Russian) title as deposited; Crossref language=en is unreliable for this publisher (PDF spot-check: Cyrillic-titled items tagged en/de have Russian body text)",
  "doi": "10.3176/oil.1991.4.03",
  "landing_page": "https://kirj.ee/oil-shale-publications/?filter[year]=1991&filter[issue]=1163&filter[publication]=10380",
  "pdf_url": "https://kirj.ee/wp-content/plugins/kirj/pub/OS-4-1991-316-323_20230317165437.pdf",
  "license": "CC BY 4.0",
  "license_url": "http://creativecommons.org/licenses/by/4.0/",
  "license_evidence": "crossref license field (publisher policy page says CC BY-NC 4.0; see notes)",
  "license_notice": "Translated from Russian. Original: A. Rulkov, Aleksandr Levin, V. Terras, “Экспресс-диагностика прочностных свойств горных пород”, Oil Shale, 1991, vol. 8 no. 4, pp. 316–323, https://doi.org/10.3176/oil.1991.4.03. 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.",
  "scan_pages": 8,
  "scan_bytes": 4108873,
  "scan_sha256": "a1419c30173420272fc5d05d8efca7e76ff24cbcd12d5cd413407d4fcc4080e5",
  "english_translation": null,
  "record_url": "https://api.crossref.org/works/10.3176/oil.1991.4.03",
  "record_source": "harvested 2026-10-14 from the publisher's API"
}