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Academic Journal

Q2

Grey Systems

Emerald Group Publishing Ltd.

United KingdomApplied Mathematics (Q2); Computer Science (miscellaneous) (Q2); Control and Systems Engineering (Q2)ISSN-matched source record
Q2Ranking
—Impact Factor (year unverified)
35H-index (SCImago 2025)
0.556SJR (2025)
2011-2026Coverage

About Grey Systems

Grey Systems is a scholarly journal published by Emerald Group Publishing Ltd.. SCImago 2025 lists it in Q2, with an SJR of 0.556 and H-index of 35.

Coverage: 2011-2026. Research categories: Applied Mathematics (Q2); Computer Science (miscellaneous) (Q2); Control and Systems Engineering (Q2).

Source-backed journal facts

ISSN(s)2043-9377, 2043-9385
ISSN-L2043-9377
Source typeJournal
Publisher / hosting organisationEmerald Publishing Limited
Publisher country codeGB
Fully open access (OpenAlex)Not marked as fully open access; hybrid options may exist
DOAJ flag (OpenAlex)Not listed in OpenAlex metadata; this is not a direct DOAJ check
Works recorded in OpenAlex598
Citations recorded in OpenAlex8,152
OpenAlex H-index39
Years represented in OpenAlex2011–2026 (not the founding or closing dates)

Topics in published research

Grey System Theory Applications; Multi-Criteria Decision Making; Energy Load and Power Forecasting; Forecasting Techniques and Applications; Optimization and Mathematical Programming; Rough Sets and Fuzzy Logic.

OpenAlex classifies topics from published works. These topics are not the publisher’s official aims and scope.

Source: OpenAlex source record. Retrieved 2026-10-03. Source record updated 2026-09-30. OpenAlex metrics are different from SCImago metrics and the Clarivate Journal Impact Factor.

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