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Grey Systems is Scopus-indexed (Q1, CiteScore 6.3), WoS SCIE. It is covered by India's One Nation One Subscription scheme for reading access. Published by Emerald Group Publishing Ltd..
Checked against the index lists dated .
ISSN 2043-9377Verify ISSN ↗2043-9385Verify ISSN ↗
Publisher: Emerald Group Publishing Ltd.
Cost to publish: No APC data — check the publisher
| Subject area | Rank | Pctile | Q |
|---|---|---|---|
| Applied Mathematics | 68 / 680 | 90th | Q1 |
| Computer Science (all) | 61 / 241 | 74th | Q2 |
| Control and Systems Engineering | 102 / 390 | 73rd | Q2 |
Not listed in: DOAJ, ABDC, ABS / AJG, FT50, UT Dallas, ONOS (APC covered)
Yes — actively indexed in Scopus, coverage 2011–present, best quartile Q1, CiteScore 6.3.
Grey Systems is Q1 in Applied Mathematics (rank 68 of 680), Q2 in Computer Science (all) (rank 61 of 241) and Q2 in Control and Systems Engineering (rank 102 of 390), by CiteScore 2025.
Grey Systems is indexed in the Science Citation Index Expanded, so it may have a Journal Impact Factor in Clarivate's Journal Citation Reports. JCR is paid, so check it for the current value. The closest free measure is its Scopus CiteScore 6.3, which places it in quartile Q1 at the 90th percentile of its subject. Its SCImago Journal Rank (SJR, a free Scopus-based metric) is 0.556, quartile Q2, with an H-index of 35.
Grey Systems is published by Emerald Group Publishing Ltd. Its print ISSN is 2043-9377 and its online ISSN is 2043-9385.
Yes. It is part of the One Nation One Subscription (ONOS) national subscription, so readers at participating Indian institutions get its full text. ONOS does not cover its article processing charge.
Yes — indexed in the Science Citation Index Expanded.
No — it is not registered as an open-access journal in DOAJ or Scopus.
Grey Systems has an h-index of 39 and a 2-year mean of 3.49 citations per paper (OpenAlex). Its Scopus CiteScore is 6.3, quartile Q1. On 2-year citations it ranks #67 of 621 Scopus journals in Applied Mathematics.
Grey Systems published 50 papers in 2025; its busiest recent year was 2020 with 70. 2026* is the year so far.
h-index, i10-index and 2-year mean citedness are open, licence-clear metrics from OpenAlex — not a proprietary impact factor. The subject rank counts only journals that OpenAlex has a figure for; it is not a Scopus or Clarivate ranking. Updated 2026-10-14.
In its latest 99 research articles (2024–2026), authors are most often from China (75.2%), United States (3.2%) and Türkiye (3%). More than half of recent authorship comes from one country.
Countries are counted fractionally, so a paper by authors from two countries counts half to each.
Scopus status: Active. No retracted papers are recorded. The Problematic Paper Screener flags none of its papers. These are indicators to check, not findings against the journal.
Retractions from OpenAlex; flags from the Problematic Paper Screener (Cabanac, Labbé & Magazinov, CC BY), 2026-09-21 export. A flag marks a paper for a closer look; it is not a finding against the journal.
Index data is curated from public sources (Scopus, Web of Science, ABDC, FT50, UT Dallas, DOAJ). CiteScore and quartiles reflect the latest available Scopus release. Always verify a journal's current status on its official source before submitting.
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