{
  "source_id": "10.3176/phys.math.1989.4.13",
  "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": 1989,
  "volume": "38",
  "issue": "4",
  "pages": "449–452",
  "first_page": 449,
  "last_page": 452,
  "title": "СТИМУЛИРОВАННОЕ СВЕТОВОЕ ЭХО В F-ЦЕНТРАХ КВr",
  "title_en": null,
  "authors": [
    "M. Rätsep"
  ],
  "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/phys.math.1989.4.13",
  "landing_page": "https://kirj.ee/proceedings-of-the-academy-of-sciences-of-the-estonian-ssr-physics-mathematics/?filter[year]=1989&filter[issue]=886&filter[publication]=7406",
  "pdf_url": "https://kirj.ee/wp-content/plugins/kirj/pub/phys.math-4-1989-449-452_20230424153928.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: M. Rätsep, “Стимулированное световое эхо в f-центрах квr”, Proceedings of the Academy of Sciences of the Estonian SSR. Physics. Mathematics, 1989, vol. 38 no. 4, pp. 449–452, https://doi.org/10.3176/phys.math.1989.4.13. 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_url": "https://api.crossref.org/works/10.3176/phys.math.1989.4.13",
  "record_source": "harvested 2026-10-14 from the publisher's API"
}