{
  "source_id": "10.3176/phys.math.1981.4.15",
  "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": 1981,
  "volume": "30",
  "issue": "4",
  "pages": "397–398",
  "first_page": 397,
  "last_page": 398,
  "title": "ОБ ОСНОВНЫХ ПОСТУЛАТАХ СПЕЦИАЛЬНОЙ ТЕОРИИ ОТНОСИТЕЛЬНОСТИ",
  "title_en": null,
  "authors": [
    "Paul Kard"
  ],
  "language": "Russian",
  "language_evidence": "crossref language=ru + Cyrillic (Russian) title",
  "doi": "10.3176/phys.math.1981.4.15",
  "landing_page": "https://kirj.ee/proceedings-of-the-academy-of-sciences-of-the-estonian-ssr-physics-mathematics/?filter[year]=1981&filter[issue]=855&filter[publication]=6954",
  "pdf_url": "https://kirj.ee/wp-content/plugins/kirj/pub/phys.math-4-1981-397-398_20230426145913.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: Paul Kard, “Об основных постулатах специальной теории относительности”, Proceedings of the Academy of Sciences of the Estonian SSR. Physics. Mathematics, 1981, vol. 30 no. 4, pp. 397–398, https://doi.org/10.3176/phys.math.1981.4.15. 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": 2,
  "scan_bytes": 622157,
  "scan_sha256": "3400d97f267bf79aff3d384b7d444b5ad20340e5ab1a0ede74eab877b38fce88",
  "english_translation": null,
  "record_url": "https://api.crossref.org/works/10.3176/phys.math.1981.4.15",
  "record_source": "harvested 2026-10-14 from the publisher's API"
}