It is the result of the cooperation of a network of institutions that work in a coordinated manner to collect and disseminate bibliographic information on serial scientific publications produced.

Ulrich's Periodicals Directory

Ulrich's™ is the trusted source of bibliographic and publisher information on more than 300,000 periodicals of all types, scholarly journals, open access publications, peer-reviewed titles, popular magazines, newspapers, newsletters, and more from around the world. world. It covers all subjects and includes publications that are published regularly or irregularly and that circulate free of charge or via paid subscription.

Bielefeld Academic Search Engine - BASE

BASE is one of the most voluminous search engines in the world, especially for academic web resources. BASE provides more than 340 million documents from more than 11,000 content providers. You can access the full texts of around 60% of indexed documents for free (Open Access). BASE is operated by the Bielefeld University Library.


Scilit is a comprehensive content aggregator platform for scholarly publications. It is developed and maintained by the open access publisher MDPI AG.


Is a journal archive portal that provides access to a wide variety of academic and scientific publications. It allows users to browse, search, and access journal articles in various fields of knowledge, facilitating access to scientific information for students, researchers, and professionals worldwide.