While working on the university’s campuses, you have access not only to open access material, but paywalled material as well (which is paid for by the university library). As a campus user, it may be difficult to identify which articles are genuinely open access and which are paywalled, as access rights in the university network are verified based on the computer’s IP address. This should be taken into account when linking publications to learning materials or other material, for example. Creating a hyperlink is a convenient way to use open access publications. Other utilisation of open publications is subject to the same copyright regulations as all other publications. Read more: The ABC of Copyright.
You should not limit your information retrieval to open access material only if you have access to other publications as well. Instead, you can utilise open access material and open access search engines alongside other information retrieval methods.
Outside of the campus network, paywalled publications can only be accessed by logging in to UEF-Primo. Doing so requires a UEF user account, which means that remote access is only given to university staff and students. However, campus libraries are open to the public, which means that anyone can come to the libraries and access their material, including paywalled content.