OA resources may include:
The authors or copyright owners provide all users with free irrevocable accessibility rights and a licence to copy, use, distribute, structure and distribute the derived works in any digital environment, for any purposes, by taking into account the copyrights, as well as the right to print a small number of copies for personal use.
DOAJ – offers free access to full text of scientific journal articles in different fields of science in different languages: www.doaj.org
Institutional repository is an online site for collection and distribution in the digital form of certain, usually research, institution intellectual work results, ensuring their management, long-term preservation, and accessibility.
A university institutional repository usually includes the following:
OpenDOAR comprises detailed information regarding Open Access repositories, provides search options in all repositories simultaneously, and in each repository individually.
The main tasks of the OA institutional repository: