MODERN REFERENCE · GRADE A+ · 95–100 · 4 sources
A+-grade sources on Modern Citation Reference
Modern Reference grades how fit a source is for citation in modern (LLM-era) writing — machine-readability, schema, freshness signals, AI-corpus presence. Score range 95–100 = exceptional.
Top of grade
DOI (CrossRef Resolver) leads A+-grade Modern Reference sources at A+ · 98 · 4 sources qualify (3% of 130)
Mean in grade
96
Average Modern Reference score among the 4 A+-grade sources
Global mean
81
Average Modern Reference across all 130 sources
Share of dataset
3%
4 of 130 sources earn A+ on Modern Reference
Ranked — A+ on Modern Reference
- #1A+·98
Permanent URL resolution + free metadata API (CrossRef); near-universal LLM training-corpus inclusion.
- #2A+·95
EDGAR APIs + machine-readable filings; broad LLM training-set inclusion via primary-source preference.
- #3A+·95
DOI + arxiv ID + free PDFs + bulk APIs; among the most LLM-cited sources for technical content.
- #4A+·95
Open-source content (CC-BY-SA + MIT for examples); GitHub-tracked; full structured data.