SciELO Preprints 

In recognition of SciELO’s twentieth anniversary, the Public Knowledge Project (PKP) and SciELO Program are entering into an agreement to develop a Preprint Server system on the principles that have guided these two organizations over the last two decades. 

The main objective is to contribute to speeding up the availability of research results and to position the scholarly communications from the countries that participate in the SciELO Network, and particularly its journals, in line with the advances and growing importance of preprints publication internationally. 

Sources: https://blog.scielo.org/en/2018/09/21/pkp-and-scielo-announce-development-of-open-source-preprint-server-system/#.W864YmgzYdV and  https://blog.scielo.org/en/2017/02/22/scielo-preprints-on-the-way/#.W864oGgzYdW 

Defining content types

Preprints are the original versions of a work that are submitted for publication consideration. They are often uploaded to a preprint server, like bioRxiv. Preprints have not been through a formal peer review process and have not been accepted for publication yet. These preprint versions may be free before (and sometimes after) the version of record, or accepted version of the work, has been published. Preprints receive a different DOI than the ahead of print and final published versions of an article.

Ahead of print content goes by many names – “publish ahead of print,” “article in progress,” “article in press,” “online ahead of print,” or “online first”. Ahead of print articles have been through the formal peer review process and have been accepted for publication. They are often made available online with a Crossref DOI before being formally published. Ahead of print content shares a DOI with its corresponding version of record.

The version of record is the final published version, and today most versions of record are electronic. Sometimes these final versions are corrected, retracted, or enhanced over time. The version of record is the most up-to-date record of the publication. 

Source: https://blog.scielo.org/en/2018/08/22/the-basics-of-content-types-preprints-crossmark-translations-and-more/#.W865EmgzYdV

Sherpa Romeo (journals are advised to submit their policies with regards to self-archiving of articles)

SHERPA/RoMEO shows the copyright and open access self-archiving policies of academic journals.

The database uses a colour-coding scheme to classify publishers according to their self-archiving policy. This shows authors whether the journal allows preprint or postprint archiving in their copyright transfer agreements. 

Website: http://www.sherpa.ac.uk/romeo

Source: https://en.wikipedia.org/wiki/SHERPA/RoMEO