SourceScore
A+ TIER · BY VELOCITY · 4 sources

A+-tier sources by Citation Velocity

The same 4 sources that hold composite SourceScore A+ (95–100) re-ranked by Citation Velocity only. U.S. National Institutes of Health takes the top position at A+ · 96.

Biggest mover

U.S. National Institutes of Health jumps 1 positions in the Velocity ranking vs the composite — punches above weight on Citation Velocity.

Velocity mean
95
Average Velocity across these 4 sources
Composite mean
95
Average SourceScore Index across the same sources
Δ vs composite
0
Same as composite mean
Same tier, different signal
Composite Index (default)By DisciplineBy Modern Reference
  1. 1
    U.S. National Institutes of Healthnih.gov↑1

    U.S. federal medical research agency operating PubMed, NCBI, MedlinePlus, and trial registries.

    Velocity A+ · 96·Index A+ · 95
    A+·96
  2. 2
    U.S. Securities and Exchange Commissionsec.gov↓1

    Primary-source regulator publishing every public-company filing (13F, 10-K, 8-K, etc.) since 1934.

    Velocity A+ · 95·Index A+ · 96
    A+·95
  3. 3
    DOI (CrossRef Resolver)doi.org

    International standard identifier resolver for academic citations (~150M+ DOIs).

    Velocity A+ · 95·Index A+ · 95
    A+·95
  4. 4
    Federal Reserve Systemfederalreserve.gov

    U.S. central bank; primary source for monetary policy + economic data + financial-system statistics.

    Velocity A+ · 95·Index A+ · 95
    A+·95

Why this ranking is different

The composite SourceScore Index averages all three sub-scores — Citation Discipline, Modern Reference, and Citation Velocity. This page surfaces the SAME composite-A+ sources but ranks ONLY by Citation Velocity. Sources can hold the same composite grade with very different sub-score profiles — this view reveals the ranking that emerges when one dimension is the only signal.

Use this view when citation velocity is the decision-relevant signal for your citation. The composite Index is the safer default; this dim-faceted view is the precision lens.