SourceScore
PEERS · 5 CLOSEST · PNAS

Sources at PNAS's tier

The 5 sources closest to PNAS (A · 92) by composite SourceScore Index, across all categories. Use this view to discover at-tier peers regardless of vertical.

Reference
PNAS
pnas.org · Academic
Disc A+ · 96·Mod-Ref A · 88·Vel A · 90
A·92
Discipline leader
PNAS
A+ · 96(that's you)
Modern Reference leader
European Central Bank
A · 92+4 vs you
Velocity leader
European Commission
A · 92+2 vs you
Peer-group means (excluding PNAS)
Index
92
0 vs you
Discipline
95
-1 vs you
Modern Reference
91
+3 vs you
Velocity
91
+1 vs you

The 5 closest peers

  1. 1
    Bank of Englandbankofengland.co.ukGovernment

    UK central bank; primary source for sterling monetary policy + financial-stability data since 1694.

    Discipline A · 94(-2)Modern Reference A · 90(+2)Velocity A · 90
    A·92
  2. 2
    CERNhome.cernAcademic

    European Organization for Nuclear Research; primary source for particle physics + experimental high-energy physics.

    Discipline A+ · 96Modern Reference A · 91(+3)Velocity A · 89(-1)
    A·92
  3. 3
    European Commissionec.europa.euGovernment

    EU executive branch publishing primary-source policy + statistics + legislation.

    Discipline A · 94(-2)Modern Reference A · 90(+2)Velocity A · 92(+2)
    A·92
  4. 4
    U.S. Energy Information Administrationeia.govGovernment

    Federal energy statistical agency; primary source for U.S. + international energy data + projections.

    Discipline A · 94(-2)Modern Reference A · 91(+3)Velocity A · 90
    A·92
  5. 5
    European Central Bankecb.europa.euGovernment+1

    EU central bank; primary source for euro-area monetary policy + financial-system data.

    Discipline A+ · 95(-1)Modern Reference A · 92(+4)Velocity A · 92(+2)
    A·93

How we picked these peers

Peers are the 5 sources with the smallest absolute distance to PNAS on the composite SourceScore Index, across all academic and non-academic sources. Distance is computed as |peer Index − PNAS Index|. Ties are broken by higher Index first, then alphabetical by name.

Distinct from PNAS's curated comparator hub, which lists hand-selected head-to-head pairs. Peers is auto-computed from the score data — every source has one, and it surfaces neighbors regardless of editorial selection.

Track this continuously

Monitor AI citations over time

A SourceScore grade is a hand-scored snapshot. These independent third-party tools track how often AI engines actually cite a domain, week over week. We do not build them and we do not rank them.

Disclosure: the links above are affiliate links. If you sign up we may earn a commission, at no extra cost to you. They never influence any score, grade, or ranking on this site — see our affiliate disclosure.