?��� 1. OAI-PMH and Metadata Harvesting

Our journal uses the OAI-PMH (Open Archives Initiative Protocol for Metadata Harvesting) infrastructure so that article metadata (title, author, abstract, references, etc.) can be automatically crawled by international indexes, search engines, and libraries. Our entire archive is open to external systems in a machine-readable format.

OAI Endpoint: etajournal.com/OAI

?��� 2. Distributed Archiving with LOCKSS (Long-Term Preservation)

It is our fundamental principle to prevent the loss of scientific literature even in extreme situations such as possible systemic interruptions or the journal ceasing publication. Accordingly, our Journal Platform infrastructure supports the LOCKSS (Lots of Copies Keep Stuff Safe) system. All our published issues are permanently backed up on secure, distributed, and encrypted servers.

?��� LOCKSS Links: vol_2019 | vol_2020 | vol_2021 | vol_2022 | vol_2023 | vol_2024 | vol_2025 | vol_2026

?��� 3. Persistent Identifiers (ORCID and ROR ID)

We ensure the transparency of author and institution identities in digital archiving:

• ORCID: All authors submitting articles to ETA Journal are required to provide a valid ORCID number for digital identity verification.
• ROR ID: Authors' institutional affiliations are processed into the article's metadata and archived in accordance with the global standard ROR ID format.

?��� 4. Author Self-Archiving Policy (Sherpa Romeo Compliance)

Supporting open science, ETA Journal grants its authors the right to freely disseminate their research. Our authors can archive their final peer-reviewed and published articles (Publisher's PDF) on the following platforms without any embargo period:

• Personal websites,
• Institutional open archives (University repositories, Institutional Databases),
• Academic networks (ResearchGate, Academia.edu, Crossref, etc.).