Persistent identifiers

All the articles and issues published by Innovation and Software already have persistent identifiers. In our case, we have 02 alternative persistent identifiers to DOI: the ARK and the PURL. Each article and each issue has an ARK ("Archival Resource Key") and a PURL ("Persistent Uniform Resource Locator") that guarantee permanent access to the articles, thanks to the constant recording, tracking and monitoring of metadata. To ensure its operation, the ARK and PURL are always shown as a complete URL link, both in the presentation of articles and issues of the journal. The NAAN ("Name Assigning Authority Number") for the ARK is resolved by N2T.net (Name-to-Thing) and can be verified in the following link. The PURL service is resolved by the Internet Archive and can be verified at the link below.