{
  "editorial_version": "1.0.0",
  "edition_date": "2026-10-09",
  "scope": "Initial research graph; sources listed by original publisher",
  "sources": [
    {
      "id": "simula-standard",
      "creator": "SIMULA Standards Group",
      "title": "Standard SIMULA: Chapter 0 — General Introduction",
      "url": "https://portablesimula.github.io/github.io/doc/SimulaStandard86/chap_0.htm",
      "class": "language specification",
      "date": "1986 standard, online transcription",
      "caution": "Later formal language standard; authoritative on the language definition, not contemporary evidence of the original 1962 decisions."
    },
    {
      "id": "chm-software",
      "creator": "Computer History Museum",
      "title": "Software & Languages — Timeline of Computer History",
      "url": "https://www.computerhistory.org/timeline/software-languages/",
      "class": "museum historical synthesis",
      "date": "undated online timeline",
      "caution": "Secondary historical synthesis; timeline dates can refer to different milestones, not necessarily first use."
    },
    {
      "id": "stroustrup-faq",
      "creator": "Bjarne Stroustrup",
      "title": "Bjarne Stroustrup’s FAQ — C++ history and motivation",
      "url": "https://stroustrup.com/bs_faq.html",
      "class": "first-person retrospective",
      "date": "living web document",
      "caution": "First-person retrospective by the principal designer, not contemporaneous artifact of every design decision."
    },
    {
      "id": "stroustrup-interview",
      "creator": "Bjarne Stroustrup, interviewed for C/C++ Users Journal",
      "title": "C++: The Making of a Standard — Stroustrup Interviews",
      "url": "https://stroustrup.com/cuj_interview.html",
      "class": "published interview / retrospective",
      "date": "1996",
      "caution": "Retrospective interview; the introductory historical summary and interview responses have different authorship."
    },
    {
      "id": "chm-simula",
      "creator": "Computer History Museum",
      "title": "The First Reference to Simula in Writing Is Made",
      "url": "https://www.computerhistory.org/tdih/january/5/",
      "class": "museum historical synthesis",
      "date": "1962 event, later museum entry",
      "caution": "Documents the earliest written reference, not the date on which Simula 67 was complete."
    },
    {
      "id": "w3c-prov",
      "creator": "W3C Provenance Working Group",
      "title": "PROV Model Primer",
      "url": "https://www.w3.org/TR/prov-primer/",
      "class": "technical provenance methodology",
      "date": "2013-04-30",
      "caution": "A provenance model for representing claims and derivations, not independent corroboration of computing-history events."
    }
  ]
}